this post was submitted on 18 Oct 2023
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Photography

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Rolling shutter on Electronic vs First Curtain (lemmy.blahaj.zone)
submitted 1 year ago by [email protected] to c/[email protected]
6 comments fedilink hide all child comments
 

I'm trying to understand why rolling shutter is a problem with electronic shutters, but not with electronic first curtain shutter modes. I've done lots of digging trying to get to the underlying reason for the difference, but I haven't had any luck, just various people talking about the fact it is a problem.

So fediverse photogs, who can help me with an answer?

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[โ€“] [email protected] 2 points 1 year ago (1 children)

Thanks. That's what I was looking for. I understood the mechanics of the different shutter types, but I couldn't understand why it made a difference. The key part I was missing was the fact that the sensor remains open and collecting light after the rear curtain has been raised, which mitigates the skew from the line by line processing of the sensor.

[โ€“] [email protected] 1 points 1 year ago

Of course! Glad I could help!

Yeah, the sensor could still be in the reading phase and "collecting light" while the shutter is closed, but since the shutter's closed, there's no light getting to it so makes no difference, and therefore any "read delay" doesn't cause issues.