DLSR raw photo question??

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Different file types have different layers and protocols and like the raw is 4 times larger. Doesnt means it is 4 times larger or better. Some formats wont pick up certain details. Just recording info. And it may not be the info you want. You can send a file that is to large by splitting the file or zipping it and unzipping it.
 
Try opening it up a little more with the 18-55 f7 is where the quality starts to drop according to all the pixel peepers.

Don

Don brings up a very good point. Each lens has it's own "sweet spot," where they take the "best" picture. Each lens' sweet spot is different. This sweet spot effects sharpness, vignetting, dynamic range, etc. Once you find your lens' sweet spot, try to shoot as close to that as possible, adjusting shutter speed and ISO to control your exposure. Your ISO can be adjusted, up, a few steps, without causing a lot of noise. You should be able to adjust your ISO all the way up to 600, before seeing any degradation in noise.

Here's a few great articles that explains this phenomena and how to find a particular lens' sweet spot.
http://www.digital-photography-school.com/find-your-lens-sweet-spot
http://www.digital-shot.com/50226711/find_your_lens_sweet_spot.php
http://photography.bhinsights.com/content/rules-thumb-finding-your-lens-sweet-spot.html
 
Don brings up a very good point. Each lens has it's own "sweet spot," where they take the "best" picture. Each lens' sweet spot is different. This sweet spot effects sharpness, vignetting, dynamic range, etc. Once you find your lens' sweet spot, try to shoot as close to that as possible, adjusting shutter speed and ISO to control your exposure. Your ISO can be adjusted, up, a few steps, without causing a lot of noise. You should be able to adjust your ISO all the way up to 600, before seeing any degradation in noise.

Here's a few great articles that explains this phenomena and how to find a particular lens' sweet spot.
http://www.digital-photography-school.com/find-your-lens-sweet-spot
http://www.digital-shot.com/50226711/find_your_lens_sweet_spot.php
http://photography.bhinsights.com/content/rules-thumb-finding-your-lens-sweet-spot.html

I havent used my 18-55 in a long time but I was thinking two stops. My 17-40F4L is perfect at F7 and the little 50mm 1.2L is definately to stops.

Don
 
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