Originally Posted by markr041
I agree with you that for most competent video shooting RS is a non-issue. The usual "tests" show it is worse than other cameras at <30p, but few would ever use a camera like in those tests.
But, there must be some reason that Sony uses the whole sensor when it can to create 4K video (at the cost of higher RS), and theory says it should be better too compared to crop mode. Why would they use two different modes if they did not have to?
I would like to see a real test; others have reported there is a difference, in noise and resolution. Ken, I know you have a good eye, but this all does not make sense.
Hopefully slashcam.de will test at 24p and 30p. Right now (before testing the a6300), they find the A7r ii has the best 4K resolution for cameras still sold (they have eliminated the NX1, which is still the best). Both the NX1 and the A7r ii sample from the larger pixels, no crop, and they attribute this method as the reason.
I have no idea what Slashcam will report in the 30p vs 24p debate, but keep in mind that at 30p, which is where I do almost all my shooting, I'm finding the best overall PQ I've ever shot. So to me the debate is more academic than anything. If somehow 24p 'measured' better, that's fine too, many will be delighted with the 24p results and, as I've said, folks who shoot like you and I will find no real issue with RS. BTW, there's little question in my mind that the A6300 will outscore the A7RII in resolution. Having both, that's what I'm seeing in real world use. I think many reviews have already hinted at that. I've seen many state what I've said, the A6300 has the best video out there.
Of course any real-world testing done with the same lens, will have to compensate for the difference in FOV to see any real differences.
Mark, let's put it this way, if there is a difference it's too small for me to see in real-world shooting. To me that's where the 'rubber meets the road'. I can't get lost in the minutia. So whatever is found, in real world use, I'm simply not seeing it. Both frame rates are superb. In my case I've never been a real fan of 24p and would it use it only for the widest of WA shooting. My objection to lower frame rates is a reduction in motion smoothness. Of course the nice thing about using 24p in the A6300, is that it does give you a wider FOV, and thus motion issues are harder to spot.
I'm also finding the low light performance, as many reviews have suggested, is truly excellent and somewhat unexpected.
Edit: One thing I forgot to mention is that from what I've read, Sony uses a very different approach in sampling the sensor in the A6300 and this is why its video quality is better. I haven't read the nitty gritty as to what's done, just that it is different. I should also note that in the A7RII, video quality is actually better in the cropped APSC mode. Tests have shown that to be the case and as I used the A7RII, I found that to be true. So it's quite possible that the 30p mode of the A6300 may actually 'test out' to have the better