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raylinds · ‎01-23-2025

I just purchased an EOS R5 and updated the firmware to the latest 2.1. I purchased a Lexar Silver CFexpress card that is listed as compatible. The card is 512GB, but when I format it shows as 59.4 GB and camera estimates 954 photos (much too low). Canon format instructions say the GB listed may not be accurate, but that and the number of shots seem way off. I confirmed on a card reader the card is, in fact 512GB.

Is there a problem or is it safe to assume the camera will use the entire card and only the estimates are inaccurate? Thanks, Ray

raylinds · ‎01-24-2025

I wanted to report back to clear up the mystery of the problem to provide a laugh and admit to egregious stupidity.

I was unaware of the fact that there was a 64 GB SD card in the second slot and that is the card that the formatting screen defaulted to. Once I switched to Card 1 the problem was solved!

Sorry to waste everyone's time with my stupidity. I can't believe that wasn't one of the first things that I checked. Too bad there is no red faced emoji.

Feel free to have fun at my expense- I can take it.

View solution in original post

kvbarkley · ‎01-24-2025

We all have brain farts, don't feel bad. It hones our skills.

Canon Community

EOS R5 shows 512 GB CFexpress Card capacity as 59.4 GB