畫質就是流量與壓縮的問題 拍攝端可以做到無損raw 但是後製硬體要夠力才跑得動

只是到了使用端流量到降到很低 畫質就爛了

https://www.blackmagicdesign.com/pr...specs/W-URSA-20

3840 x 2160
Blackmagic RAW 3:1 - 127 MB/s
Blackmagic RAW 5:1 - 76 MB/s
Blackmagic RAW 8:1 - 48 MB/s
Blackmagic RAW 12:1 - 32 MB/s
Blackmagic RAW Q0 - 76 to 191 MB/s *
Blackmagic RAW Q5 - 19 to 55 MB/s **
CinemaDNG RAW - 273 MB/s
CinemaDNG RAW 3:1 - 127 MB/s
CinemaDNG RAW 4:1 - 95 MB/s
Apple ProRes XQ - 250 MB/s
Apple ProRes 444 - 165 MB/s
Apple ProRes HQ - 110 MB/s
Apple ProRes 422 - 73.6 MB/s
Apple ProRes LT - 51 MB/s
Apple ProRes Proxy - 22.4 MB/s