News Interview with Sigma

[CharlesH]

The reason it's important for a pro is that they don't want warped shapes in the their professional images. They want things to look natural.

My experience is with the Sony A1 which is electronic shutter and 30 FPS - with things like bears running across shallow streams catching salmon. I've never seen rolling shutter effects from that camera. It has about half the rolling shutter time as the S1Rii. I don't know if the S1Rii would have a problem in cases like that - but it would probably be a just small effect. My approach would be to use the mechanical shutter if I saw any problem with photos like that.

 

[CharlesH]

I came back with way, way, way too many images.

If you haven't used the miracle of FastRawViewer you should try it. You quickly look at all those pictures, keep the good ones, and delete the rest.

 

[GeorgeHudetz]

My experience is with the Sony A1 which is electronic shutter and 30 FPS - with things like bears running across shallow streams catching salmon. I've never seen rolling shutter effects from that camera. It has about half the rolling shutter time as the S1Rii. I don't know if the S1Rii would have a problem in cases like that - but it would probably be a just small effect. My approach would be to use the mechanical shutter if I saw any problem with photos like that.

Of course it's early, but what I have read is that the S1RII (does anybody else hate typing that????) has a readout speed of about 20 ms in 12 bit mode, while the A1 is about 5. So, it's a 4:1 ratio. Again, if the data I have seen is correct.

I am hopeful that it is a small effect in the situations I may find myself in, but it's hard to know for sure.

And yes, there is always the mechanical shutter, but you lose pre-capture, which I am very much looking forward to.

 

[CharlesH]

Of course it's early, but what I have read is that the S1RII (does anybody else hate typing that????) has a readout speed of about 20 ms in 12 bit mode, while the A1 is about 5. So, it's a 4:1 ratio. Again, if the data I have seen is correct.

What I've looked at is the rolling shutter time, which for the A1 is 16.6 ms at 8K (as measured by CineD). The S1Rii at 8K (DRE off) is 23.5 ms (as measured by Gerald Undone). The difference is about a factor of 1.4.

The A1 actually has better rolling shutter at 4K, 8.1 ms. However the A1 has relatively crappy video at 4K; I think it may be pixel binned down from the 8K, so I always shoot at 8K. The S1Rii has good video quality at all resolutions, so no pixel binning or row skipping, and the rolling shutter is mostly the same at all resolutions. I much prefer that the S1Rii uses all the pixels for each of the video formats; it should have high quality video across the board.

Of course my backup is the GH7, with 13.2 ms at 4K (as measured by CineD), with very high quality video. I've gone to Alaska to photo/video bears four times, and probably won't go again. But if I did I would take the GH7 so I wouldn't have to lug around full frame telephoto lenses and a honker tripod.