R5II Startup from Sleep

[Hector1970]

My R5 was always a little slow to restart after been unused for a few minutes.
It was a distinct lag maybe 1 second.
I just got an R5II and I'm surprised it has the same general issue.
I saw a thread from 2025 and it was around memory cards being the reason.
Is this really the case or is the camera just slow waking up.
This is generally not a huge issue. With the R5 I had the habit of pressing the focus button as I lifted it up to my eye.
I'm surprised I now need to do the same to the R5II.
I would have expected it to be more responive.
If its card related - why would that be the case. Why would the viewfinder not be ready if it was the card was slow waking up?
Does it happen with all mirrorless cameras.

 

[neuroanatomist]

My understanding is that the issue is with higher capacity memory cards. 256 GB is fast, 1 TB is slower. The camera probably has to ‘review’ the file structure in the card, determine free space, etc. Takes more time for larger cards.

 

[P-visie]

My R5 was always a little slow to restart after been unused for a few minutes.
It was a distinct lag maybe 1 second.
I just got an R5II and I'm surprised it has the same general issue.
I saw a thread from 2025 and it was around memory cards being the reason.
Is this really the case or is the camera just slow waking up.
This is generally not a huge issue. With the R5 I had the habit of pressing the focus button as I lifted it up to my eye.
I'm surprised I now need to do the same to the R5II.
I would have expected it to be more responive.
If its card related - why would that be the case. Why would the viewfinder not be ready if it was the card was slow waking up?
Does it happen with all mirrorless cameras.

I had the same issue with the R5 Mk II. I had both CF Express and SD card in the camera. The issue is caused by the slow V60 SD card. Once I removed the SD card the problem was fixed. @AlanF did some tests with faster SD cards and, IIRC, found that a fast SD card resolved this issue.

 

[AlanF]

It's the second card. I posted a thread on it, as implied by @P-visie. Either have a V90 in the second slot or leave it empty.

Thread 'R5ii - Choice of SD card for slot 2 to avoid wake up problems'

May 11, 2026

I have had problems with my R5ii in slowly waking up when it's powered down (not turned off, just in eco settings). The EVF lights up immediately but there is no information on the screen and it is insensitive to clicking buttons, and it takes several seconds to be fully operational. No-one was able to help when I posted a question some time ago. The problem has now been solved (thanks to an AI search). There is a quirk of the R5ii to check the info on both cards when waking up. I had a high capacity CF Express in slot 1 and an 1800x Lexar V60 as an emergency overflow in 2, which is never...

• AlanF
• Replies: 8
• Forum: EOS R

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