I'm not sure about the specs for the 4K120. The R5 doesn't allow SD cards to record 4K100/120 (8 or 10 bit)- I assume because of sustained write bit rates. Someone else can do the maths
UHS-II specs has max 300MB/s half duplex speeds but there are roughly only 8 cards that get over 200MB/s with 3 or 4 hitting over 250MB/s (Angelbird, Prograde, Lexar, ProSony SF-G). 128GB is not a long recording time. Only a couple of 256B cards and no 512GB UHS-II cards that I can find.
UHS-III hits 624MB/s full duplex but I don't think that there are any on the market yet and they will probably be bypassed by SD Express standard and there are none of them.
I assume that external recorders will be most used for these cameras as there are a lot of limitations from SD cards.
UHS-II specs has max 300MB/s half duplex speeds but there are roughly only 8 cards that get over 200MB/s with 3 or 4 hitting over 250MB/s (Angelbird, Prograde, Lexar, ProSony SF-G). 128GB is not a long recording time. Only a couple of 256B cards and no 512GB UHS-II cards that I can find.
UHS-III hits 624MB/s full duplex but I don't think that there are any on the market yet and they will probably be bypassed by SD Express standard and there are none of them.
I assume that external recorders will be most used for these cameras as there are a lot of limitations from SD cards.
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