What else is happening before the first curtain on E-M1?

Started 4 months ago | Discussions thread
Anders W
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Re: What else is happening before the first curtain on E-M1?
In reply to Jim Salvas, 4 months ago

Jim Salvas wrote:

With the new update installed and the electronic first curtain shutter option enabled, there is clearly a click before the exposure. It's easy to hear at 1/4 second and something is visibly moving very fast if you're brave enough to fire it off with the lens removed and watch what happens.

What is that?

Jim,

Did you verify that the EFCS stays enabled (based on what the camera is telling you) when you remove the lens? One question we were pondering in the other thread was whether EFCS would be allowed/would work with a lens that is not electrically connected to the body. It may be that the EFCS needs/wants information from the lens in order to sync properly with the second curtain, or rather the shadow of the second curtain, which will vary with the lens, FL, and f-stop used.

As to the thing you see moving, does it look like it's shutter blades blocking the sensor or something else? What about shooting a video of the sequence with another camera and play it back frame by frame?

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