Some vertical black smudges.

Started 3 months ago | Discussions thread
mamallama Forum Pro • Posts: 59,665
Re: Some vertical black smudges.

Overrank wrote:

British Jonathan wrote:

Okay. My suspect lens is on the A7iii here, my good copy of the same lens is loose. Both are stopped down to f/16, which is clearly not the same between them. I hope this is the problem because that's nice and easy to solve

I don’t think that would cause the banding. Have a look at

Its possible that there is some timing issue between the two shutter curtains. Do you get the same issue with shots with openings longer than 1/30s (say) and less than (1/30s) ?

If it were a problem with the shutter at the focal plane why are black smudge edges fuzzy  and not distinct lines?

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