DWOfPaul wrote:
As far as I know, Sony has not done a mechanical shutter over 10fps, and the readout speed, while better, still sounds too slow for moving objects. So even if it has 30fps I wonder if it will really be useful.
Whether the electronic shutter will be too slow will of course depends on how fast things are moving. The A1 II's electronic shutter is about 1/250th of a second so we are talking about 1/80th of a second or so. Even the A1 II's electronic shutter isn't fast enough for really fast moving objects, but it works for almost everything that is moving under 100 mph. This should work easily for people walking and probably even running. The math suggests anything under 30 mph, which would be pretty much all humans moving on their own power. It seems like it would be fine for wedding for example. For sports, it will depend on the sport. It would probably be fine for basketball and football in almost all cases. Golf balls, tennis balls, and baseballs are going to look wonky most likely. For wildlife, most mammals it will probably work, but fast cats and their prey not so much. Most birds in flight probably not and especially humming birds and birds of prey, but it might work for slow moving waders and swimmers and probably butterflies but then again it may depend on the species or maybe it won't be fast enough for those.
The bottom line is that the increase in sensor scan speed sounds very significant. The A7r V is 1/10th of a second, so if this is 1/80th to 1/85th of a second that is a huge increase and will make the electronic shutter useful for a lot more situations and you could still fall back on the mechanical shutter in those situations in which the movement was too fast. You couldn't get silent shooting or 30 fps, but you could still capture most anything moving at most any speed like we have been able to do for a long time with mechanical shutter.