E-M5: some frames way too dark

Started Jan 12, 2013 | Questions thread
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BJL Veteran Member • Posts: 8,831
E-M5: some frames way too dark

I have a strange occasional problem with my E-M5 recently: sometimes a frame comes out far darker than the aperture/shutter speed/ISO speed/lighting combination should give, or even totally black. In some tests, a sequence of three frames of the same subject a few seconds apart at the same manually set f-stop and shutter speed and same ISO speed, some are far darker than others. IIRC, in this case it is always worst in the first frame of the sequence. The problems is usually in bright light with high shutter speeds (1/1000s to 1/2000s) and ISO 200, but has also happened at least once at the other extreme: low shutter speed and high ISO 3200. The problem is seen equally with in-camers JPEG and raw files.

Any ideas other than a malfunction of the shutter?

Could it be a firmware glitch?

Has anyone had a similar experience, or better yet, solved it?

P. S. No, the lens cap is not on! (live view avoids that mistake.)

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