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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 28 Nov 2010 (Sunday) 08:47
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Help with exposure

 
ukcyberboy
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Nov 28, 2010 08:47 |  #1

http://i920.photobucke​t.com …Test%20album/IM​G_9758.jpg (external link)
http://i920.photobucke​t.com …Test%20album/IM​G_9756.jpg (external link)
http://i920.photobucke​t.com …Test%20album/IM​G_9752.jpg (external link)
http://s920.photobucke​t.com …/ukcyberboy/Tes​t%20album/ (external link)
I am having a few exposure issues and doubting the image I see.
I used and umbrella here on all the photos and my Kenko 1100 light meter, my problem is they often seem too bright. I also loose detail, and if I use photo shop Raw I dial in the exposure back from 1/3 to 1 stop. But then they look grey and dull.
Any help with this would be great.
I also tried to link direct as I hate going to albums, but exif is in tacked on them.
Thanks for looking.
Simon

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dmward
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Nov 28, 2010 09:32 |  #2

Simon,
Not sure what you mean when you say you are having problem. The images you posted links to look like they are reasonably exposed.

With digital the critical element in exposure is to make sure the histogram does not pile up on the shadow end or blow out on the highlight end.

Umbrella delivers flat wrapping light that means relatively low contrast.

rather than adjusting exposure in photoshop use the levels and curves adjustments to position highlights and shadows where you want them.

Also the brightness command.
Here is the first of your images. I took it into Lightroom and added medium tone curve. About the same as strong tone curve if working on the raw file.

Decreased contrast just a bit to get the skin on her right cheek about right, and increased contrast to about 28 which would be close to 50 on a raw file.

All the work was to increase visual contrast. Looking at the histogram I'd say the exposure was about right.


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ukcyberboy
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Nov 28, 2010 09:58 as a reply to  @ dmward's post |  #3

Thanks for that.
Do you know a good book that I may read to learn about photoshop and light room.
I have them both but they have got a little mucked up, maybe time to reinstall and start from scratch.
Simon


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Lens | Canon 70-200is F4 L |
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PacAce
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Nov 28, 2010 10:16 |  #4

ukcyberboy wrote in post #11357554 (external link)
http://i920.photobucke​t.com …Test%20album/IM​G_9758.jpg (external link)
http://i920.photobucke​t.com …Test%20album/IM​G_9756.jpg (external link)
http://i920.photobucke​t.com …Test%20album/IM​G_9752.jpg (external link)
http://s920.photobucke​t.com …/ukcyberboy/Tes​t%20album/ (external link)
I am having a few exposure issues and doubting the image I see.
I used and umbrella here on all the photos and my Kenko 1100 light meter, my problem is they often seem too bright. I also loose detail, and if I use photo shop Raw I dial in the exposure back from 1/3 to 1 stop. But then they look grey and dull.
Any help with this would be great.
I also tried to link direct as I hate going to albums, but exif is in tacked on them.
Thanks for looking.
Simon
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If you images are looking flat, try adding some contrast to them. This can easily be done using the Layer Curves adjustment tool. However, I personally like to use local contrast adjustment instead for the finer control of the overall contrast it allows. This is done with the Unsharp Mask filter tool. I usually set the Amount to 15 or 20% and the Radius to 80 to 100 pixels (Threashold set to 0) as a starting point and tweak it from there. Give that a shot and see how you like it. In addition to adding contrast, images usually require some sharpening to be applied after they've been processed and resized for the web. So that's another step you should add to your post-processing workflow.

Here's a side-by-side comparison with just the local contrast adjustment (no sharpening, etc.):


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Wilt
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Nov 28, 2010 11:33 |  #5

If those photos seemed bright, I would suspect that you have your MONITOR adjusted to be too bright!
You should see 26 discrete tonal steps from white to black in this step wedge, with a properly adjusted monitor

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Help with exposure
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