Some vertical black smudges.

Started 4 months ago | Discussions thread
Barry Twycross Veteran Member • Posts: 4,428
Re: Some vertical black smudges.
1

Looks like a sticky shutter to me. Though if I'm remembering right, the SRT shutter goes the other way (from right to left). If the first curtain goes across (left to right) and gets stuck before it gets all the way across, and then the second curtain catches up and pushes the first curtain shut. That would give dark left ends.

Exercising the shutter can help. You can also check by looking, or taking a slow-mo video with your smart phone.

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