Originally posted by curlednoodles On that image comparison, the K1 II looks the best to me and the A7RIII looks the worst at all ISO's.
Odd. I think the A7R III actually does great at all high ISOs. For example, at ISO 102,400 , the highest supported by all 4 cameras, A7R III is clearly best, with the K-1 II coming in second. Well, "best" is all relative, since none of those 4 images would be usable for large prints of cropped images, regardless of what kind of NR you did in post.
Image comparison: Digital Photography Review
At ISO 51,200, I would say both K1-II and A7 III do best. The images from K-1 and D850 at that level are simply too noisy to be usable.
Image comparison: Digital Photography Review
Same at 25,600 :
Image comparison: Digital Photography Review
Clearly, I love the noise reduction that both Pentax and Sony are doing . Cannot stand the color noise is the black background in the D850 and K-1 v1 .
The only ISOs where the A7R III looks worse to me than the others are low ISO, 100 to 400 . Looks like smoothing / NR is applied in the Sony there, which is unnecessary and does come at the cost of detail visibly. Same charge that DPR has against the K-1 II vs K-1 .
DPR says their analysis shows the NR on the K-1 II starting at ISO 640 . I compared the ISO 400 to 800 shots of the K-1 II, and cannot observe any notable loss of sharpness or detail at 100%. I have a calibrated 32" 4K monitor and 20/20 vision. Even put my face inches from the screen. Still no difference. I could not tell these 2 images apart if I didn't know which was which before hand.
A every single ISO, I like the K-1 II pic better than K-1 .
For my money, the K1-II and Sony both look very good, but Sony has much more expensive lenses and limited choice of them. For stills the K-1 II is arguably a better value. Sony is way ahead in video.