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Sunday 29 January 2012

Exercise : RAW

Outline: Take three images, each in a different lighting situation. One in daylight, one in artificial light and one high dynamic range. Open and process each pair of images, jpeg and raw, in your usual software and compare the final two versions, noting any differences.

Daylight:

I took this image in the afternoon light in the shade and set my white balance to daylight. My camera was set to 1/25 F4 with ISO 100 and I had to reduce the exposure by -0.3.
Raw image:

This is the final image after processing the raw image. I did quite a bit of work to this in the raw converter. The exposure was decreased ( the same as when i shot the image) and I had to increase the recovery slider. I increased the fill light and also increased the blacks setting too. I needed to increase the brightness and also the contrast to make a pretty drastic change to what started as a pretty flat image. I also slightly increased the saturation and vibrance. Overall, the image looks much better. The glass is now enhanced to stand out and the liquid appears fuller and more vibrant.

Jpeg:

The jpeg version also needed some tweaking or post processing. The shadows were lightened and the highlights were darkened slightly. The midtone contrast was decreased as well as the brightness and the overall contrast was increased. This is the final outcome. The glass is still prominent in this image however the whole image is a lot brighter than the raw version. I find this version is still a little flat in comparison to the raw version, the glass and liquid look more realistic and '3d'. The dynamic range of the jpeg version is 18 - 233 and the raw version 27 - 251.
I think of the two, I prefer the raw version. The glass looks more life like and more appealing and a higher contrast than the jpeg.

Artificial light:

This image was taken indoors at dusk under a tungsten ceiling light. White balance was set to tungsten and the ISO 400. Settings were F4 1/5 with a +0.3 exposure.
Raw:


I dont feel like I did a lot of processing to this image. I needed to increase white fill light, brightness and contrast. Then I decreased the saturation but increased the clarity and vibrance slightly. I feel that the colours are not as vibrant as they could be here but there is no colour cast over this image that we sometimes see from tungsten lighting. The dynamic range in this image 38 - 230.

Jpeg:

Now this image does have a slight colour cast, a slight orange glow almost highlighting the fact to the viewer that artificial lighting was used. I actually didn't post process this image except for a little increase in brightness and contrast. The dynamic range of this image is 18 -237.

Comparing these versions, I prefer the jpeg image. I like the slight colour cast and the fact that you can tell it was taken under artificial lighting. The colors appear more vibrant than the raw version and the whole image has more contrast than the raw.

High dynamic range:

This image was taken in the same conditions as the 'daylight' images. The settings were F6.3 1/40 ISO 200 and white balance was set to daylight.
Raw:






Not much processing was required to this image either. I decreased the exposure by 0.6, which had not been required while shooting, I increased the recovery slider and also increased the blacks and the contrast. The dynamic range is 8 - 219.

Jpeg:

This image had slight post processing but not much. The mid tone contrast was increased then I decreased the The brightness and increased the overall contrast. The dynamic range is now 18 - 230.






I actually think there is not much difference between these two versions. The only thing worth noting is that the black in the jpeg maybe slightly darker than the raw version but that just be my eye.



Conclusion: This exercise proves that shooting in RAW can be beneficial. It gives you a 'second chance', if you like, to get the image you want. RAW lets you manipulate the image during processing, eliminating the need to get the settings exactly right at the time of shooting. I have been shooting RAW for a while now but can honestly say I've never taken advantage of manipulating the RAW image before. As this exercise shows, sometimes it's not always the better version but it IS another option. I will honestly explore this feature more in the future.

Saturday 28 January 2012

Other Photographers.

My tutor has advised me to have a look at other photographers work, so for the past week or so I've been having a nosey around the internet to find some photographers who's work fascinates me.

I am already a fan of Micheal Kenna. I love black and white photography and think that his images are breathtaking. He can make his subjects appear to be unreal, as though they were drawn to perfection.
This image is a perfect example. Michael is a true professional at creating such a dramatic shot through something so natural. He uses a low camera angle and keeps the horizon below centre, so as to not take all focus from the sandbanks in the bottom of the image but the highlight the sky and make it a prominent feature. Using the black and white effect truly makes this image. If taken in colour, I could assume the whispy white clouds were rolling in over the sand on a hot day with a pure blue sky. However, by shooting this black and white and possibly over exposing slightly, the effect of the overall image changes a drastically and we have these vibrant white almost fierce looking clouds on a black sky creating a huge dramatic sky over the almost silky looking sands of the sand dunes
.
 As well as dramatic skies, Michael can also create completely calm water images where water appears glass or mirror like. This image highlights this. Gone are the dramatic skies, but instead we have a perfectly still image where the sky and water are so still and clear, the trees could be a still life arrangement set up on a mirror. The horizon is positioned slightly below centre to enhance the distance from the subject and create more depth to the image.

 The crisp and sharpness of his images create a truly striking overall result. I really like how he uses a vignette on an image to highlight a lone subject and his use of black and white to highlight a variety of textures, as mentioned already, clouds, water, spray of water and smoke from power stations. All these things could possibly  be overlooked in an image,if noticeable at all and Michael uses black and white to enhance these and make them a big part of the overall image.

Looking through his gallery archive, I stopped on this Lone Tree image. This image is so simple from subject to composition but the usage of black and white really makes the tree the main focus against the whiteness of the snow and the pale background. Looking through my own photo library, I found this image:



Not the same, but the same idea. My image is nowhere on the same level as that of Michael Kenna and my image was taken on my camera phone, back when I was starting out so not the best quality either, however I have used processing techniques to enhance the image. By adding a vignette, as Michael does on some of his images, It really does help to draw attention more to the tree by framing it if you like. I cropped a big chunk off the outside of the image and created more of a panoramic here, again to focus more on the tree as it now fills the frame.

I also came across this image during my research. Another Single lone tree image, pretty similar to that of Michael Kenna. This photographer, Philipp Klinger, has a very similar style, using the black and white effect to create a more theatrical sky and using a low horizon position to emphasize the sky as well as to keep some focus on the tree.
Looking through more of Philipp's work, he has a vast subject range, from landscapes to architecture and the main point to focus on is his great use of colour. Looking through his photostream, he likes vibrancy and uses a lot of diagonal lines through his images. Diagonal lines are great and good composition. He likes to use diagonal from the frame so that the main focus is drawn to the centre of the image but personally I think that using the same 'template' can make your images very 'samey' no matter what your subject is. This is all down to personal taste though and this is the style of the photographer's eye so it's not something to be criticized.

On the subject of lines, I also came across the work of Joel Tjintjelaar. I know there is a huge pattern forming here, but I really do like black and white landscape photography. Joel's images have exactly the same quality for me as Micheal Kenna. The ability to create such calm and serenity though and image is amazing and his images are also incredibly striking. Joel can also create some remarkable skies, but he doesn't seem to emphasize on them too often. He lets the tones of the black and white effect show the viewer the difference between the sky and the cloud instead of using the effect to highlight them.
 Looking through his photostream, he likes to use a lot of lines and curves through his images too, and his camera angles really make powerful lines through his images. The camera angle in this image really makes the shot, simply drawing focus to the amazing curves of the architecture to make an image.

I started out looking for some influential photographers and I can honestly say I found some. I was already a fan of Michael Kenna's work but it's amazing to think that there are other photographers out there with the same qualities. It may seem strange for someone who loves music photography to be so interested in landscape photography, but I started out taking landscape images and and I guess that I should really think to take more landscape shots myself. If this research has showed me anything, it's not to overlook the smallest of details in an image. Composition overall is hugely important and you need to take the time to think about our overall image and the final outcome when composing and even when processing the image.


Latest news.

Wow, I seem to be so busy with a million things going on at the moment, haven't posted in quite a while. But I do have some great news to report.

I have received my 'The Art of Photography' result and I passed!!! So I'm really happy with that and can stop worrying about it while I continue on with this course. I'm just completing the final tweaks to assignment 2 following my tutor report and then I will crack on with Part 3.

Also, I applied to be a photographer intern for an alternative music website and have been selected to undergo a 'trial' period :) Which is really great news and means that I'm going to have a very busy 6 weeks but no pain, no gain right?! So will keep you posted on that as and when.

Good start to 2012  :)

Wednesday 4 January 2012

ASSIGNMENT 2: Digital Image Qualities

Outline: Take approximately 6 images of a similar theme, incorporating at least one each of the following qualities:

  1. A high dynamic range (high contrast) image
  2. A low dynamic range (low contrast) image
  3. A low lighting image where you would need a high ISO setting
  4. A mixed lighting image.

Planning:
I had really not been looking forward to this exercise. It took my a long while to decide what theme I wanted to use and what types of photographs I could take, that fulfilled the requirements of the exercise but were also interesting to view. I pondered over a few ideas and then happened to have a brainwave. It's christmas! And everywhere you look are all these beautiful christmas decorations so I thought that 'Christmas' would be a convenient and great theme to photograph for this assignment. 

I wanted to try to capture a christmas theme in between 6-10 images, using a mixture of natural and also set up scenes. The subjects of my images I planned to be anything that would give the viewer a thought of christmas as soon as they saw the images so my initial ideas were:
  • christmas tree
  • twinkly lights
  • cards
  • santa
  • baubles
  • presents
  • wreaths
All these ideas were, for me, perfect christmas symbolism and therefore whenever I see images of the above, I think of christmas! 

I have a great new compact camera which I wanted to use during this assignment alongside my Canon SLR, to see if there would be any significant difference in the outcome of the final shots. Also, I decided to take sets of images over two days to experiment with lighting, to see if different weather conditions, and different camera settings to coinside with those conditions, could alter the final images. 

Assignment:
Revisiting following tutor feedback:
I seem to have made a really silly error and forgotten to label which quality I was trying to portray in each image so firstly I will be adding these labels to each of the images.

Image 1 - Low lighting/ high ISO

Canon 1000D F8 1/100 WB auto ISO 1600
This image was set up late at night with a lightbox and a single tungsten lamp set up behind the subject, creating low lighting conditions. I took a similar image for 'The Art of Photography' and was so impressed with the outcome, I wanted to try this set up for this image. I needed to use a high ISO setting to get the image but obviously this has caused the image to have a lot of noise. I started at ISO 400 and increased the setting on each image, and 1600 is the highest setting my camera has so fortunately, this image came out clear. I also experimented with the camera position and focal length here. I tried postioning the camera slightly higher with a closer focal length but I found the baubles weren't in as much shadow as I wanted and you could also see a lot more reflection in the bauble. 
I chose this as the best image and then during the editing stage,  I cropped the image down to include just the baubles and effectively increased the noticeable noise by doing so, but I only wanted the baubles in the image without a lot of space around them. I also increased the brightness and contrast to darken the front of the baubles and reduce the reflection.

My tutor liked the idea of this set up but suggested maybe using a brighter more colourful light behind to lift the composition slightly. I'm not too sure what a more colourful light here would achieve. I wanted the image to purely be the silhouette of the baubles and was happy with the effect of the slight edge of colour on the baubles in this final image.

Image 2 - High dynamic range:

Canon 1000D F4.5 1/50 WB daylight ISO 100
I know that this image doesn't have the immediate christmas symbol but for me it is a natural part of christmas, due to family members having them for christmas. Plus, I liked the traditional red and green christmas colours so included this image as my 'wildcard'. This image has a high dynamic range, from the flowers, to the leaves and the shadow. In terms of the shooting aspect, this image was a lot easier to shoot with it being in a window setting on a sunny day with plenty of light available. Therefore, I was able to use a low ISO setting and use a daylight white balance setting. My aim was to really bring out the colours of the plant and I think I managed to capture them very well. I did have to change camera angle during shooting though. This was because firstly the window was to my right and the sun was positioned directly to the left of the plant and I was gettying a lot of glare and the images were coming out completely over exposed. By moving to the opposite side so that the window was to my left, the sun was then just above my left shoulder and sitting better on the plant. 
During editing, I only had to slightly crop out a bit of glare to the right of the image.

I agree with the tutor's comment on this image with it seeming more like an exercise than just a natural 'creative venture'. I did seem to overthink some of the images in this assignment, as stated in my conclusion, so i was a bit too 'textbook' when taking this image to incorporate the qualities to the image. I will retake this image in front of a white background as suggested to see if I can better the image in any way.


I have now retaken this shot and I have to admit, they look much better. I processed the image to repair the over exposure from the bright sunlight on the white background, and slightly increased the contrast:



As you can see, the background looks more blue now and the colourful leaves look a bit faded, so I think I'm going to keep the image over exposed to keep the background looking white and crisp.





Image 3 - Low lighting/ High ISO:

Nikon Coolpix S9100 F4.2 1/5 WB shade ISO 800
I found this image slightly challenging to shoot. I wanted to capture the wonderful texture of these baubles but also show that they were on a christmas tree, so I really took the time to experiment with focal length, composition and camera angles. The image was also taken on a rainy day where the natural light was low and in a room with a tungsten light. I had to also alter my ISO settings and white balance to find the best settings to capture this image. I started with a low ISO setting and increased by one stop and this image was taken with a relatively high ISO of 800. I also changed the white balance from daylight to shade to tungsten and thought that this image with a shade setting was the best. This image only needed a slight crop during editing to remove unwanted detail to the edge of the image. 

Image 4 - mixed lighting:

Canon 1000D F4 1/4 WB auto ISO 800
This image was taken at night with a tungsten room light on but also with the tree lights in the background. I shot this image with a high ISO setting and also with aperture priority to create some depth to the image. I took a lot of frames for this image. I had an idea of what I wanted the final image to look like however, It was mainly the focal length I was toying with. I liked this best due to being able to see the majority of the bag with the obvious christmas tree in the background. In the processing stage I had a lot of highlight clipping and shadow warning so to rectify this I dropped the exposure -1.5 fstops and increased the fill light.

My tutor commented that the tungsten light in this image is very overpowering so maybe a tungsten white balance setting would've worked better to remove that colour cast. However, as the decorations are now away for another year, I'm not able to experiment with that now. 

Image 5 - low dynamic range:


Canon 1000D F5 1/10 WB auto ISO 1600

This is another composition that I set up. I wanted to see if I could create a low contrast image using the red baubles on a red background and I was actually very pleased with the outcome. This was set with a light box at night with one tungsten lamp to the right of the camera. A high ISO setting was needed again and this created a lot of noise in the image, which is highlighted when the image is enlarged. However, I did use a lot of camera angles while shooting to create an interesting composition for such a flat image.
There was also a lot of editing during the processing stage I slightly cropped the image to remove a shadow to the foreground of the image and also decreased the contrast slightly to flatten out some of the vibrancy of the red.

Image 6 - high dynamic range:

Canon 1000D F4.5 1/4 WB daylight ISO 400
Again,  I set this image up but this time I just created different compositions with table decorations during the day. The room was lit naturally and so I kept the white balance to daylight but on an overcast winters day the ISO setting of 400 was needed. I managed to keep some of the detail on the tree to try to highlight the texture of it but this was pretty uneventful while shooting. During processing I only needed to slightly increase the recovery slider as there was a lot of highlight clipping on the tree sparkles and by using the recovery slider, the highlights were removed.

My tutor has commented on the 'purple tinge' to this image, stating that maybe over exposing the image may have altered this to make it seem like a nice white background. However, the purple casting over the image is due to the wall in the background as it is painted lilac. So composition wise, maybe a set up would've worked better, as suggested for image 2, complete with a white background. I have tweaked the exposure to create this image:


I agree that the image is much better without the purple haze, however i think the over exposure is losing some detail to the left side of the tree decoration. 


Image 7 - mixed lighting:

Nikon coolpix S9100 F3.5 1/5 WB auto ISO 400
This image was taken with the compact camera during a full mixed lighting situation. I had natural lighting from the door in the hall, the tungsten lighing from upstairs and also the lighting from the twinkly lights on the staircase. In spite of all this, the lighting conditions are still quite low and required a test for the best ISO setting. I left the white balance on auto to allow the camera to choose the better setting for all the different lighting. I really like the different colours in this image created by the different lighting sources and to highlight them, I increased the contrast a bit while decreasing the brightness slightly. This increased the shadows on the banister to allow emphasis to the lighting.


Image 8 - high dynamic range:

Nikon coolpix S9100 F3.5 0.6 secs WB daylight ISO 400
I think this image was the easiest to shoot. The wreath is in a doorway with plenty of natural light and a nice plain white background. This emphasized the tones colouring in the wreath and also it's shaping. I kept the ISO to 400 as this was the lowest I was able to use without an blurring appearing. During processing I only had to straighten and crop the image ever so slightly to level out the horizontal line at the top of the image and to take out a big space at the bottom. I also slightly tweaked the contrast up to bring out the colours a bit more.

As with the previous image, my tutor commented that maybe over exposing this image would make the background more white and crisp, however it's the same as the previous image. The colour in the background is the wall paint behind the door that the wreath is mounted on. I have tweaked the brightness and contrast in photoshop elements to amend the image to this:




Again, I agree that the composition is better but again, I feel some detail in the wreath ( where the light reflects ) may be lost due to this over exposure. 


Conclusion:
I wasn't looking forward to carrying out this assignment and, if i'm honest, I'm still unconvinced that I actually enjoyed doing it. I think that I worried too much about creating the images and making sure that I undertook all necessary aspects that I forgot to just have fun with it and so I think that maybe be this may have come through a bit in the images. But overall, I am happy with the final shots and they have fullfilled the goal I set myself in the beginning of wanting the christmas theme to really shine through in each photograph.  The plus side to overthinking the exercise though has to be that looking through my photo library from this assignment, I must've doubled the amount of images I took due to experimenting with settings. And this has highlighted that experimenting is great in that you can have a variety of the same image but with slight differences due to altering the settings, as it does give a wide choice of images to choose the best from. And then from deciding 'the best', you are allowing your personal creativity and character to come through, as what you think is the best image, may not be the best to someone else.

I was dreading the feedback on this assignment as I was unsure if I had over thought some of the images but I am extremely happy with the comments  my tutor made and she also gave me some really good suggestions on things to alter. I did say that I used a mixture of natural in home decorations as well as setting up an arrangement for other shots. It seems maybe a set up arrangement would've worked better overall as the background seems to be the major factor in the images my tutor has suggested to amend. 


Afterthought: After sending off my images to be printed and receiving them back today, I can see why prints are needed for the submissions. Some of the images look completely different on print than they do on screen.  I am still happy with them and look forward to receiving my tutor's feedback.
On receiving my fedback my tutor has noticed that the quality of the prints does not seem to be as good or clear as the on scren prints and suggested that i have them reprinted by another print company before submitting the assignment for formal assessment.

Tutor Feedback

Overall Comments

Well done for completing another assignment so quickly, Amanda. You are showing great commitment to the course.

Assessment potential

I note that you have submitted a previous unit for formal assessment. I am therefore going to assume that you would like to submit this unit too. The key to success at formal assessment will be the development of your blog (please see notes on this section) and producing nice sharp images.

Feedback on the assignment


Elements to consider with your assignments:

 

This assignment is concerned with the quality of the image that you take and the amount of control that you take in the planning of each shot. Images should be in keeping with the theme of the assignment, and should show your consideration of the effects of light on your subject and your level of understanding over the outcome of the picture.

 

Your assignment in connection with the above points


Planning


You have given some careful thought to your subject matter and worked appropriately with a theme of Christmas. This has worked well for you allowing you to work with some nice reflective items with lots of colour.

NB Your prints are not nearly as clear and sharp as your on screen images and there is a slight colour bias that is not very favourable. I would suggest having these re-printed by a different print company if you are submitting them for formal assessment. These prints really aren’t doing justice to your photography.



Images

Your conclusion on this work has been quite interesting. In some images you have clearly enjoyed the challenge while in others the photography has become more of an exercise. Although this unit is based around technical considerations it is nice to see you make explorations and experiment with your images. You haven’t clearly identified in your notes which of the various image qualities you are demonstrating. I would suggest giving each the appropriate setting before submitting for formal assessment, so that the assessors can see instantly what your intention has been behind the shot.

High Dynamic Range

Image 2: The colours are nice and bright on this shot, but this has turned into an exercise rather than a creative venture. Think well known high street family group photographers here with bright white backdrops and over-exposed informal group placements. It might have been fun to try and set up something similar with your plant.

Image 6: I’m really not sure which image quality you are demonstrating with this shot. However, I would like to see it sit here comfortably in the high dynamic range. The background in this shot looks a little purple for daylight. Could you have over-exposed this picture and created a nice bright still life image? The shallow depth of field works very nicely.

Image 8: Again – I’m not sure what your intention was with this image. High Dynamic Range? Could you have over-exposed this a little to give a nice crisp white background to your garland?


Low Dynamic Range

Image 5: This works really well! I love the red on red arrangement and you have worked very hard with your lighting here to create the desired effect. You are showing a good level of experimentation here – well done.

Low Light/ High ISO

Image 1: This example of shadowed baubles demonstrates the requirement well and shows some strong consideration to lighting. The beauty of Christmas baubles is the colour and reflective qualities and reducing them to a silhouette does ask us to observe the shape and little else. Would a brighter more colourful light source behind have lifted this composition a little?

Image 3: Nice bold colours her and an interesting angle of view. You’ve thought about texture detail here and adding environment to your shot. The photograph version I have here isn’t quite as sharp as the one on screen, which is a bit of a shame.

Mixed Lighting

Image 4: The tungsten light is very overpowering in this picture. The compositional arrangement works well giving a nice Christmassy feel.

Image 7:

The mixed lighting here has given you a nice result. Increasing the contrast has helped to give the desired effect.





Summary

This has been a bit of a guessing game, in terms of which images refer to which techniques. I hope I’ve guessed right on each occasion, having read through your notes for clues as to your intentions. It may be that you can tweak some of these images a little with post processing in order to make your visual messages a little clearer. The enlargements aren’t as sharp as they could be but I think this is your print company rather than your photography.

Learning Logs

I note that you have mentioned that a couple of photographers have inspired your work. I would like to see you explore, investigate and reflect on the work of other photographers. This may mean including one or two images in each case, in your blog, relevant to your own practice, and then reflecting on them. State what you like about them, what you don’t like, how they have been taken and how this research may shape your future practice. 


Christmas 2011 brings new camera!

Well, christmas is upon us again and low and behold...I have a new compact camera! It's my first Nikon! /happy

It's a Nikon coolpix S9100 and i'm so glad to have a new compact camera. I tend to try and take my Canon SLR whenever I can but sometimes it's just not possible so always like to have a compact with me just incase. And of course a simple compact is just not good enough sometimes.
My first decent camera was my Fujifilm Finepix S1500 and I still use it to this day. It's great for gigs and festivals with it's 12X optical zoom and video recording and it's great with the ability to shoot in many automatic settings as well as manual and custom settings so as you can imagine, it has served me well.
The Nikon is just an upgrade really and by no means will stop me using the finepix but although it has all the same features and more, including being able to alter the white balance and ISO settings!, it's a lot more compact whereas the finepix is small but bulky.
So I am a very happy camper and can now play about with it over the festive period. See what images I can get out of this one :)

Exercise: Colour cast and white balance.

Outline: 
Part 1:- Find the following outdoor lighting situations and photograph an object, shooting four versions using each one of the white balance options:

  • Sunlight
  • Cloudy
  • Open shade on a sunny day
  • Auto
 Part 2:- Find and shoot a mixed- lighting source scene. For example, indoor/outdoor scene at dusk.


I have completed this exercise before as part of 'The art of photography' and the link to that exercise is
here. It has the exact same concept as this exercise and I have completed the exercise in the same manner. 


white balance settings:, auto, daylight, shade, cloudy
These are the images taken in sunlight and they all have the orangey glow normally associated with 'warm' colour temperatures. The shade and cloudy settings show slightly more of an orange colour cast than the daylight and auto settings here. The auto is adjusting the image to give a more neutral colour but I think that either of the auto or daylight setting work well here.

white balance settings: auto, daylight, shade,cloudy

These images were taken in a shaded area on a sunny day believe it or not. They have all got a rather flat contrast between the wall and the bucket and it's difficult to decifer which detail is for what. However, I find that the white balance setting does make small but significant change to the image. The daylight setting here seems to have a bluey colour cast over the image. Again the shade setting has a more orangey glow but I think this benefits the image better. It gives the wall more colour and the bucket a more wooden appearance giving a bit of depth to the image and making it look more natural. The cloudy setting has similar features, giving a slightly less orange colour cast and looking more like the auto setting which is obviously trying to use a bit of all the settings best bits to create an overall effect.

white balance settings: auto, daylight, shade, cloudy
The same colour cast effect as been created by each setting for the 'cloudy' images. However, I actually think the shade setting works really well for these images as it gives a slightly more natural feel to the stones. But as the cloudy setting has a slighty less orange colour cast, I think this works better on the image overall as the shade setting make the flower colour a little too different from the original.

The second part of this exercise is exactly the same as an exercise I completed in 'The art of photography'.
I am going to link you to the outcome of that exercise here as I would only be reiterating what I said in the write up for that exercise.

Conclusion: As this is the second time I have taken on part 1 of this exercise, I am happy to have had the opportunity to look over the importance of white balance again and also through re-reading up on part two aswell. The auto setting is great for certain situations however, if you do have the time, this exercise shows that you should play about with the white balance settings as sometimes the setting you didn't expect will create a better image. I was amazed at the difference the white balance setting made on the dusk indoor/outdoor scene, so it shows that should time allow, dont just rely on the auto setting.


Exercise: Scene dynamic range.

Outline: Measure the dynamic range of a variety of scenes.



I took a variety of images, all with different contrasts. I took most of them on a sunny day except for the images that I have specified taken on a cloudy day.

So image 1:


This is an image of a garden taken in direct sunlight. In this image the sun is directly above and just out of frame. With the camera set to automatic, to automatically alter the aperture and shutter speed, I took four readings:

Grass: 1/60 F8
Shed: 1/100 F6.3
Window: 1/160
Sun on decking: 1/400 F11

I took the readings of exactly the same scene but on an overcast and showery day and the readings were as follows:

Grass: 1/60 F5.6
Shed: 1/80 F5.6
Decking: 1/60 F5.6



Image 2:

This image was taken in the kitchen, in front of a big window on a sunny day with the sun coming directly through the window. Again, without changing any camera settings the reading were:

Toaster: 1/100 F6.3
Dark knife handles: 1/40 F5.6
Light knife handles: 1/160 F7.1
Tiles: 1/125 F7.1


Image 3:



On the same sunny day, this image was taken of the front of the building. The front of the building is in complete shade and therefore the readings are as follows:

Wall: 1/50 F6
Number sign: 1/80 F6
Doorway: 1/13 F5.6
Door frame: 1/100 F6.3



Image 4:

This image was specifically taken on a cloudy day of a relatively low contrast image.

Bush (to bottom of image): 1/50 F4.5
Wall (to right of image): 1/80 F5
Trees (to top of image): 1/50 F5


Conclusion:
I have noticed from my findings of this exercise that the more contrast that the image has, the more range the readings are. On the cloudy day, with the low contrast image of the bushes and even in the garden image, the aperture stays at it lowest for all the readings and the shutter speed stays relatively low as well, not venturing any higher than 1/80 at its peak. In comparison to the images in the sunlight on a sunny day where the aperture can range a bit, up to F11 in one image and the shutter speed is a lot quicker in balance with the higher aperture. This shows that light plays a huge factor in the contrast of an image and the cameras dynamic range can be increased or decreased according to the variety of light available.