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

Started Dec 20, 2013 | Discussions thread
Keit ll Veteran Member • Posts: 4,482
Re: Comment about your test data

These results are interesting & it would be nice to see what happens at a range of different shutter speeds. Some caution in interpreting the data is needed however because these vibrations are being measured at the periphery of the camera body & do not necessarily reflect what is happening at the sensor. How the sensor moves will depend on how well it is isolated from the rest of the vibrating body & on any inherent resonance frequencies of the sensor itself.

One way of sorting this out would be to correlate the measured vibrations with a critical examination of the images obtained from individual cameras. It is just possible that if the vibrations are successfully diverted to the outside of the camera body then there is less at the sensor level ?

It should not be totally surprising that using a tripod doesn't seem to help - the more rigid the tripod the more any vibrations may be reflected back & contained in the camera body. Something like a box attached underneath the tripod plate containing lead shot would help to dissipate any vibration & prevent it from being reflected back. More plastic components in the camera body may well have the same effect ?

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