Having seen a bit of chat on a Sony E-mount forum about problems with "shutter shock" on the A7r, I thought I would do a few test shots with different lenses, shutter speeds and apertures. There are 8 images and I have taken a central crop from each one at 3000x2000 pixels for a closer inspection. All lenses are close to their minimum focus distance.
The first lens is a Makinon 135mm
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| f2.8. 1/3200s |
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| f2.8, 1/3200s |
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| f8, 1/125s |
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| f8, 1/125s |
Next is a Pentax 50mm
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| f1.4, 1/800s |
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| f1.4, 1/800s |
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| f8, 1/60s |
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| f8, 1/60s |
Next is the Sony FE 28-70mm using deliberately long shutter speeds on a tripod (gorillapod resting on carpet)
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| f5.6, 1/20s |
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| f5.6, 1/20s |
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| f5.6, 1/10s |
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| f5.6, 1/10s |
Finally, a Cosina 200mm - again with long exposures on the gorillapod
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| f4, 1/25s |
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| f4, 1/25s |
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| f6.3, 1/8s |
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| f6.3, 1/8s |
There is no doubt that the shutter does clunk a bit, but there is little evidence of camera movement in these images, maybe a little in the 200mm 1/8s shot mounted on an imperfect tripod. The image is slightly worse than the f4, 1/25s photo.
In theory the worst shutter speed range is 1/30 to 1/100s - but here, the 1/60s image at f8 on the Pentax 50mm is spectacularly the best image.
My general impression is that you have to be very picky to find a much fault with shutter shock and even then you have to try fairly hard to make it significant.
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