09-18-2016, 10:26 PM
Ok, my bad on that 1 point: the A7r has an unusually violent shutter, which causes its shutter shock issue with tripod use, but it has no IBIS. Its follow up does need electronic 1st curtain because of the IBIS. With Nikon the issue is certain lens-specific.
It all does not relate to the EOS M series, they don't have IBIS, no lenses have been found to be shutter shock prone, and they don't have the "violent" shutter from the A7R.
It all does not relate to the EOS M series, they don't have IBIS, no lenses have been found to be shutter shock prone, and they don't have the "violent" shutter from the A7R.