topic Re: R5 Mark II Buffer Question in EOS DSLR & Mirrorless Cameras

R5 Mark II Buffer shows 86 shots but I get 153

RDowson — Thu, 23 Apr 2026 12:59:12 GMT

Just got my new R5ii along with a Delkin Devices POWER G4 2.0 (160 GB) CF Express card.

The card can support 805MB/s sustained write speeds but the buffer shot count in the EVF shows only 86 shots.

The camera is in High Speed Continuous+ and Electronic Shutter, shooting in RAW and only writing to the CF Express card.

My own rough test shows that the camera is doing around 153 shots before it hits the buffer.

I understand that the camera won't show any number higher than 99 on the display.

So why am I only seeing 86 shots? Is something throttling it or is it just a display 'bug'?

Would a VPG400 card make any difference? I only shoot stills.

Re: R5 Mark II Buffer Question

Waddizzle — Wed, 22 Apr 2026 23:58:13 GMT

Max available frame rates can and do drop when the camera battery charge drops below 50%.

Re: R5 Mark II Buffer Question

RDowson — Thu, 23 Apr 2026 00:02:29 GMT

I'm sure I'm still getting around 153 shots before hitting the buffer even with the battery below 50%. Why does the camera still show 86 shots though if it's actually handling more?

Re: R5 Mark II Buffer Question

Waddizzle — Thu, 23 Apr 2026 00:08:50 GMT

“ I'm sure I'm still getting around 153 shots before hitting the buffer even with the battery below 50%. Why does the camera still show 86 shots though if it's actually handling more?“

What are you describing, 86? Is that the remaining shots?

Re: R5 Mark II Buffer Question

RDowson — Thu, 23 Apr 2026 00:29:11 GMT

No, 86 is the buffer count. The number next to the remaining shot count.

Re: R5 Mark II Buffer Question

Waddizzle — Thu, 23 Apr 2026 01:23:58 GMT

“ No, 86 is the buffer count. The number next to the remaining shot count. “

That’s what I thought. Why is that a problem? Is it stuck on 86? It should return to 99 once it writes the buffered images to the memory card.

Re: R5 Mark II Buffer Question

RDowson — Thu, 23 Apr 2026 01:25:47 GMT

It’s never been higher than 86. Not sure why as the card would appear to be fast enough for it to display 99.

Re: R5 Mark II Buffer Question

Waddizzle — Thu, 23 Apr 2026 01:36:40 GMT

“ It’s never been higher than 86. Not sure why as the card would appear to be fast enough for it to display 99. “

Contact Canon Support, 1-800-OK-CANON.

Re: R5 Mark II Buffer Question

Waddizzle — Thu, 23 Apr 2026 01:58:06 GMT

Did you check the specs?

Re: R5 Mark II Buffer Question

RDowson — Thu, 23 Apr 2026 02:24:38 GMT

That’s mechanical shutter but electronic shutter should still do 93 shots.

Re: R5 Mark II Buffer shows 86 shots but I get 153

FloridaDrafter — Thu, 23 Apr 2026 22:10:21 GMT

FWIW, depending on the lens, the corrections I have enabled, and ISO, my R5 II shows anywhere from mid 70's to upper 80's when shooting RAW. For JPeG and cRAW, regardless of what corrections I have enabled, it shows 99.

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On an unrelated side note: I've never been curious enough to just hold the trigger until the buffer stops it, so I really don't know how many I can capture. Typically when shooting BIF or perched, I don't want more than 10 shots in a burst. I still end up with nearly a 1,000 or more images a session per camera (I use 3 with different lenses). My wife questioned my reasoning for using burst for perched birds until I showed her that one perfect frame. I also shoot flowers, but use single shots for that.

Newton