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

Started 6 months ago | Discussions thread
Anders W
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Re: Shutter video
In reply to Alien from Mars, 5 months ago

Alien from Mars wrote:

Anders W wrote:

And what would all the noise from about 0.120 to about 0.180 in the first graph and in the neighborhood of those two peaks be about? And where would the corresponding "cocking" of the FCC be?

I just don't see the benefit of moving second curtain during sensor readout with a possible risk of image degradation because of light leaks.

While you might be right it's impossible to prove it or disprove without the high-speed video.

We don't have a high-speed video for the E-M1 yet (as far as I know). But here is one at 1200 fps for E-P2. The SCO is slower and more gradual than the three other shutter-blade movements, wouldn't you say?

http://www.youtube.com/watch?v=T7Mg5Y3pZSE

The noise could correspond to sensor stabilization system for example (yes, IS was off for exposure but EMs could re-engage after the exposure to recenter the sensor, don't you think?).

"cocking" for FCC could be the very first peak in the recording (marked "?"), could be the very last peak in the first two graphs (what I now suggest as SCO event).

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