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| p.3 #2 · Sony A7r shutter vibration |
Except none of those other elements you listed can generate vibrations without external perturbation, ...
They will also respond to internal perturbations. Just sayin'.
I figure that the A7R without electronic first-curtain will be equivalent to using mirror lock up (MLU) on a DSLR that doesn't have electronic first-curtain. I'm OK with that.
The issue with MILCs without EFSCs is that you get vibration from two shutter movements vs just one for a DSLR - the 2nd curtain closing before the exposure starts, followed by the 1st curtain opening at the start of the exposure. A DSLR has only the latter. Both camera types have the final 2nd curtain movement but that occurs as the exposure is ending so the majority of its vibration will be resonating after the exposure is over.
Good point. OTOH, I figure that the movement of a shutter in the "rear lens cap" on one of the TS-E, ZE, or M645 lenses that I plan to use the A7R with, will not have a big effect on IQ.