![]() Card Download Speed The Sony MRW-G2 CFexpress + SD dual card reader. However, this problem can be overcome by transcoding those files to a more edit-friendly format such as ProRes 4:2:2. ![]() XAVC S 4k is a long GOP compressed codec which means it will be harder (more computer processor-intensive) to edit compared to the all-intra XAVC S-I 120p files that you could record to a CFexpress card. In other words, you should get roughly similar results when shooting 4K 120P XAVC-S 4K, which is possible with a V90 SD card. It’s therefore likely that some, if not most of the quality benefits of the XAVC S-I codec could be nullified by shooting in S&Q mode. For most people, this minor limitation will be a non-issue.Īlthough S&Q mode is handy because the footage is already slowed down for you, it does usually produce a lesser quality of file than shooting in a regular high frame rate mode and simply slowing it down in your NLE. ![]() This leaves the 4k 120p XAVC S-I S&Q mode as the main reason to use CFexpress with this camera. I don’t see too many people using the a7S III to shoot HD content these days, so the 200/240p HD S&Q mode limitation isn’t a big deal. When selecting those options, you’ll have the further choice of 4:2:0 8-bit or 4:2:2 10-bit.ĬFexpress Type-A card and Sony a7S III Is it a big deal? If you want to shoot in 4k 100/120p without using a CFexpress card, you also have the option to shoot in XAVC HS 4k at 100/120p, or XAVC S 4K at 100/120p. While you will need a CFexpress card to record the 120p flavour of this codec in S&Q mode, you can still record 24/25p and 50/60p in XAVC S-I on good old V90 UHS-II SD cards when not using S&Q mode. XAVC S-I is a new all-intra H.264 codec that shoots incredibly high bitrates and theoretically produces the best footage that you can record internally in the A7S III.
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