So I borrowed the 5100 for the weekend, and I'm having problems with the ISO settings. I have the camera on manual mode, the ISO is also on manual, but when I change the ISO level from 100 to 6400 there is absolutely no change. I don't understand why this is when both the camera and ISO setting are in full manual. Can you help?
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Why won't the ISO settings change on Nikon D5100?