Vibration of the A7R shutter compared to D3 and NEX-7 using a seismometer

Started Dec 20, 2013 | Discussions thread
Bob Janes
Bob Janes Veteran Member • Posts: 3,150
Harmonics?

Do you think that the problem of the excess vibration might be due to harmonics between the vibration of the initial closing of the shutter prior to exposure and the impact of the first curtain hitting the other side of the shutter when fully open?  I notice the big peak on the Z axis occurs at about the 4th phase after the initial vibration... makes me wonder if the vibration would be minimised if the two impacts were out of phase rather than in phase with each other...

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