1/23/2024 0 Comments Sony a7 iv videoI've shot countless hours on the a7iii that's gone to TV without any issues whatsoever. For interview and the bulk of doco shooting it is not an issue. Unless you are shooting material with reasonably rapid movement rolling shutter is not a major handicap in recording most normal human speed movement. The Canon EOS R6 full frame UHD 25fps rolling shutter 30.6ms with great success. Though how many people have been shooting with the a7iii, the Panasonic S1H (rolling shutter of 29.7. but the 4K FF rolling shutter value is 26.8ms. This now makes me think that the a7iv is probably capable of recording FF 50/60p but Sony has restricted that capability. Was anyone aware that you could do this? I can't find any Sony documentation regarding this capability. As my curiosity was triggered by this "discovery" further tests will take place. Further comparisons of the two external 2160p files recorded on the Ninja, one recorded when the a7iv was set to 4K internal Crop 4K 50p output and the other when the camera was set to HD internal full-frame 50p seem identical on the timeline. On checking back I can confirm that if you are recording internally in full-frame HD set to 50p or 60p and have the HDMI output settings, not on "Auto" but set to "2160p" You can record the full-frame 7K downsampled image to 50p or 60p 4K externally. But to my surprise, it was recording a full-frame 4K 50p signal. It was recording away quite happily recording the full-frame output from the 7iv. I was actually rolling when I noticed what was happening on the Ninja V. So I switched the internal record to, full-frame HD 50p. 4K 50p internal recording and going out to a 4K 50p external recording. At the same time, I was recording to an Atomos Ninja V and recording Prores at 4K 50p. I had been shooting with the Sony a7iv in 4K 50p which as most would know is in the APSC crop mode. I guess others may know this but I didn't so I learnt something. Call me dense but I discovered something today by accident.
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