Canon Community

spiceman · ‎02-07-2023

I use a 5DM4. I'm looking to get some extra memory cards. Since I shoot a lot of time lapse videos, I need a pretty high read/write speed. I currently use SanDisk Extreme Pro CF card, which writes at 160. I see CF type B cards with transfer rates of 1200. One, aren't there limits as to how fast the camera can write to the card? And two, is a type B card even compatible with my 5d?

shadowsports · ‎02-07-2023

Both good points gents.

Yes, type b refers to CFExpress. The 5D4 doesn't support CFExpress Type B.

~Rick
Bay Area - CA

~R5 C (1.0.2.1) ~RF Trinity, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring

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View solution in original post

Waddizzle · ‎02-07-2023

The maximum read/write speed of the camera is limited by the camera hardware.

it sort of works like gas mileage from a car. Buying the highest octane gasoline does not cause or create a significant increase in gas mileage.

I use SanDisk Extreme Pro cards.

--------------------------------------------------------
"The right mouse button is your friend."

rs-eos · ‎02-07-2023

Aren't type B cards referring to CFExpress?

For the 5D IV, CF (Compact Flash) cards that can be used are Type I, UDMA Mode 7. See page 5 of the User Manual.

--
Ricky

EOS 5D IV, EF 50mm f/1.2L, EF 135mm f/2L, 600EX-RT (x6), ST-E3-RT
EOS C70, RF 24-70 f/2.8L IS, EF-EOS R 0.71x

shadowsports · ‎02-07-2023