a7r firmware for shutter shock

Started Aug 9, 2014 | Discussions thread
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Re: Depends on shutter-speed, lens, orientation & support
In reply to Erik Magnuson, Aug 10, 2014

Erik Magnuson wrote:

osv wrote:

focal length is irrelevant, because the vibration is caused by the camera body, not the lens...

It depends on the lens two ways: lens weight & size changes the resonance of the system and the amount of blur for same shake.

A7r http://blog.kasson.com/?p=4450. More links at the bottom of here http://blog.kasson.com/?p=3757

D810 EFCS difference: 50mm http://blog.kasson.com/?p=6618 vs 135mm. http://blog.kasson.com/?p=6638

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Quote from the article for the people refusing to read links, this is from the FE 55mm test:

At 1/160, things take a bad turn, and there’s degradation in the horizontal lines as well as the vertical ones (image in post).

Things remain about the same until 1/80, which is the worst performing shutter speed. Even at 1/80 there is enough contrast at the sensel pitch to cause false color artifacts (image in post).

As the shutter speeds get slower from 1/80, there is gradual improvement. It looks like this at 1/5.

Bottom line? Yes, there is shutter-shock degradation with the Sony 55 even on a sturdy set of carbon fiber legs and a good head. It’s not terrible, though. If the Zony weren’t such a sharp lens, it would be hard to see.

So yes, the shutter shock in the A7r is a problem if one care about IQ which one should do if one would be buying such a camera (else there's the A7). If people didn't care about IQ it stands to reason that they wouldn't even bother about even thinking of buying the A7r.

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