5d Mark III low iso poor performance.

Started Jun 20, 2012 | Discussions thread
Jim Cockfield Forum Pro • Posts: 16,342
JPEG quality used for posted samples....

I haven't read the entire thread. But, one thing that I noticed was how small the file sizes were in your posted samples.

For example, this one is only around 73KB for a 1000x667 pixel image, which tells me that a low quality/high compression JPEG setting was being used somewhere in your workflow (perhaps how you saved the image after downsizing for web posting).

http://g2.img-dpreview.com/8663F47AFD214A7EB4ED67160C4BEE5B.jpg

So, part of what you may be seeing is JPEG compression artifacts from lower quality settings (higher JPEG compression) exaggerating any image defects.

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JimC

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