topic Re: Canon R5 Mk ii Storage remaining on card in EOS DSLR & Mirrorless Cameras

EOS R5 Mark II - Storage remaining on card

Ange50 — Mon, 31 Mar 2025 12:36:18 GMT

I am wondering about checking the storage remaining on my R5 Mk ii. When I go into the Format Card menu option, it is not giving me an accurate representation. I currently have a 128GB card, and have shot 5 photo sessions in RAW, (Each around 28 GB according to my computer), and it is showing 225MB used. I shot a few more photos to test, then it showed 197 MB used. It's going down even though I took more photos. Is it faulty?

Re: Canon R5 Mk ii Storage remaining on card

shadowsports — Sun, 30 Mar 2025 23:45:48 GMT

Greetings,

I think what you're confusing binary versus decimal calculation. When you buy storage, the formatted capacity is less than the unformatted capacity of the card.

Manufacturer use a decimal calculation to report disk size. Your operating system uses a binary calculation.

So your 128 GB card has a formatted capacity of 119.2 GB

A gigabyte is 1000 MB decimal or 1024 MB binary. The storage manufacturer uses decimal calculation to express the size of the storage. Your computer uses binary calculation to express the size of the disk or card.

Re: Canon R5 Mk ii Storage remaining on card

Ange50 — Sun, 30 Mar 2025 23:49:40 GMT

Thanks for your reply! I do understand that the formatted capacity is less than the label, however my problem is that my camera is not giving me an even close to ballpark figure of how much I have used. Before and after a photo session yesterday, it gave me the same number: 225MB used.

Re: Canon R5 Mk ii Storage remaining on card

Ange50 — Sun, 30 Mar 2025 23:54:19 GMT

After chatting to my son, he pointed out the perhaps the images are being moved from the card to the computer on import, and are not longer on the card. He was right. Crisis averted!!! I hadn't even thought of that possibility, as I didn't have it set up that way previously.

Re: Canon R5 Mk ii Storage remaining on card

shadowsports — Mon, 31 Mar 2025 00:05:52 GMT

Greetings,

I'm glad you were able to figure out your issue. I wasn't aware any transferring was occurring. 😄 But it all makes sense now.

Re: Canon R5 Mk ii Storage remaining on card

Mike — Mon, 31 Mar 2025 00:09:57 GMT

You're son should go into tech support! Glad you were able to resolve this issue!

Re: Canon R5 Mk ii Storage remaining on card

Ange50 — Mon, 31 Mar 2025 00:13:14 GMT

Lol, sometimes it just takes someone to look at something a different way! (He's not even a Canon user! 😉)

Re: Canon R5 Mk ii Storage remaining on card

jrhoffman75 — Mon, 31 Mar 2025 17:42:52 GMT

@Ange50 wrote:

After chatting to my son, he pointed out the perhaps the images are being moved from the card to the computer on import, and are not longer on the card. He was right. Crisis averted!!! I hadn't even thought of that possibility, as I didn't have it set up that way previously.

Just my practice, but you might want to disable that feature/setting. I never delete images from my camera storage medium until I verify that they are properly downloaded to my computer.