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Old 24th November 2013
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Re: Lots of Noise On Long Exposures

Well, surely the question is how many are lots. Assuming lots is a reasonable number, under 50 or so. Then what you've probably got is hot pixels. Might be worth running pixel mapping which I'd guess is under one of the spanner menus.

Noise Reduction is dark frame subtraction, which you should have on for long exposures as it takes away a lot of the pixel noise.

Personally I suspect that live view sensors are more prone to hot pixels as they are on constantly.

Unfortunately I don't have an E-M1.

Mayhaps a crop of a shot taken, with exif, could be useful for the group to help diagnose any problems.

Nick
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