Wishgranter wrote:
Hi Yegor
looking back on your data AND my experience ( last 4 days ) with the Sony A7r ( the first model ) + Samyang 14mm Aspherical lens im see same issue as a lot of photographs are referring to. The main issue is you NEED to use TRIPOD or get properly focused imgs. The design of the cameras ( very “lite” weight ) make proper sharp focus a PAIN. shooting form hand is no way under 1/100-200 sec. On D800E can get to 1/15-10 sec WITHOUT any problem, and its because of its robustness-weight.
Pressing of shutter will move whole camera a much more as on other cameras, that why you get out of focus some part of the image…
For confirmation even on your side can try shoot something from tripod vs from hand ?
the first A7r had some issues with shutter vibration, if I recall correctly - so that might be causing the issue, too. Otherwise, it should certainly be possible to get sharp handheld images: the cameras have IBIS and lenses have OSS for just this purpose. I did a test with an A7Rii and 55mm/1.8 and got perfectly clear/crisp handheld results. Granted, it was outdoors and well-lit, but if you follow proper photographic technique, there’s no reason these cameras shouldn’t produce good results.
I used a Sony NEX-5T (smaller/lighter than the A7 by far) all last summer and got plenty of great results from Photoscan and Reality Capture.
If anything, I think using a lighter camera will be better for shooting handheld, because you won’t have the fatigue of hefting a heavy DSLR - I’ve used a D810 for the past few years and the weight definitely strains your arms after a full day of shooting.