Re: Official: Sony Alpha a1 Mirrorless Digital Camera
Steve Spencer wrote: buffalowolff wrote:
Looking forward to seeing better sample images with exif . Noise performance will significantly impact my decision on what to keep and what to sell. With supposed 15 stops of DR I expect it to be quite good.
For lots of reasons that supposed 15 stops of DR doesn't tell us much. First, that is at low ISO not high ISO. Second, it tells us nothing about patterns in the noise which can make or break high ISO performance. Third it is a bit of a made up number. You can't talk about DR without making some assumptions and Sony tells us nothing about the assumptions they are making to get that number. Fourth, we have seen that number before. Sony said the same thing about the A7r IV, but its high ISO performance isn't as good as some other Sony cameras, notably the A7r III, IMO, has a bit better high ISO performance.
So, I think we will have to wait until the camera is actually tested before we know about its performance at both low ISO and high ISO. I am hopefully it will do both types of shooting well. I expect that it will be a bit worse at both types of shooting, however, than camera specifically designed for better low ISO or high ISO shooting. I cautiously realize, nevertheless, that the announcement does not to assure that one type of shooting or the other or both might be less than we hope for.
Caution is a good word at this point and definitely need more testing. It's important to note that by every apples to apples comparison, the high ISO noise performance on the A7R4 is equal to or better than the A7R3 when down sampled from 61MP to 42MP. Having said that, I expect the A1 to come in better than the downsampled A7R4 due to improvements with this new, never seen before sensor. I'm sure we'll know fairly soon where it stacks up.
It's important to note that Topaz Denoise AI has completely changed the game on high ISO noise and this is not the huge unsolvable hardware issue that it once was.
Jan 26, 2021 at 03:46 PM
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