This could be big!
Global Shutter on the Sony A9 III
The Sony A9 III will have a global shutter with a resolution of 24 megapixels. But will this make it the fastest mirrorless camera?
www.thecamerainsider.com
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That would be amazing. Presumably no mechanical shutter and a sensor shield would be possible. I hope they are wrong about the FPS.
The rumor seems to imply lossless FPS tops out at 30 FPS.What's wrong with 40 FPS?
it looks like the a9ii is still using sd cards. a high raw fps is going to burn through buffer very fast, and take a long time to write out.That would be amazing. Presumably no mechanical shutter and a sensor shield would be possible. I hope they are wrong about the FPS.
that rumor feels credible in the sony context, imoThe rumor seems to imply lossless FPS tops out at 30 FPS.
The rumor seems to imply lossless FPS tops out at 30 FPS.
Yes.isn't the Z9 20 FPS max for lossless 14 bit raw?
Yes, but as you pointed out earlier, you already have in the Z9 20 fps 14 bit at 45mp and the A1 has it at 50mp and 30 fps lossy. So at 24mp for this new camera , there is not really any advancement in that regard. But there will be more to it than that, if it really is global shutter it is a big deal IMO. There will be interesting advantages beyond fps, but it is interesting where the fps limit exists, perhaps sensor reset time? I dunno, I am very much looking forward to the official announcement. The technology will eventually flow through to us poor Nikon schmucks.40 fps raw at 12 bit is pretty amazing. Those 2 bits don't do anything if the iso is above, what? 400?
A9 or A9 Ii for that matter are very old cameras. They were built when there was just XQD or SD on the market. CF-a should be plenty fast for 24 mpx (I wish they went for 33 tho) even at 60 fps. Sony unlike Nikon has deep buffers. Which strategy is smarter - hard to tell. Sony guarantees buffer size while with Nikon it depends on your card choice but you can get almost infinite one ... both solutions are vialable imho.it looks like the a9ii is still using sd cards. a high raw fps is going to burn through buffer very fast, and take a long time to write out.
even if they upgrade it to cfe-a like the a1, the cfe-a card is still half as fast as cfe-b so writing out the buffer is still a bit of a weak spot. there is the new cfe v4 standard, maybe it'll adopt that.
otoh, the fact the a9ii uses sd and the a1 uses cfe-a means it's possible they are purposefully keeping a distinction there.
but in general the faster fps will really burn through the buffer if they don't get faster storage and that could be a reason to limit fps
ALSO, there is the issue of compressing raw images fast enough. i recall the a1 didn't let you do lossless compressed at the higher framerate, only the lossy ones, and the reason is likely they didn't have the processing horsepower to do full lossless faste enough to keep up with the data stream.
yes, it will be interesting to see if there are compromises. but exciting times!I'm going to be interested to see how it impacts dynamic range, since historically global shutter is worse for it.