5DII getting MORE noisy over time?

Started May 19, 2012 | Discussions thread
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redisred
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5DII getting MORE noisy over time?
May 19, 2012

I've had a pair of 5DII's for a few years now, they have always looked the same. However, recently I noticed one of them got dramatically noisier than the other, especially in the shadows and nothing seems to fix it. Firmware, total reset, battery change, nothing. Attached is an example between the two. Exact same settings on each, purposefully underexposed and pushed a stop to demonstrate the difference.

Do sensors go bad? Has anyone ever even heard of this happening?

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