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Is it normal for the burst rate to slow down when you stop down the aperture?

Started Feb 9, 2020 | Questions thread
OP Wintereater Forum Member • Posts: 84
Re: Is it normal for the burst rate to slow down when you stop down the aperture?

Alastair Norcross wrote:

R2D2 wrote:

Wintereater wrote:

Maybe try resetting your camera back to Factory Default (always a good starting point).

I haven't tried resetting. I was hoping that someone with similar canon cameras would test theirs out to see if the same thing happens lol.

Maybe someone else will chip in. I sold my M5 when I picked up the M6ii (no slowdowns at 3, 7, 14, or 30 FPS.).

The main reason I posted this question was to find out if the newer canon mirrorless cameras had this issue, so thank you for your input (although the M6 Mark II doesn't really interest me. Still hoping for an M5 Mark II). Have you tested out AF-Servo burst shooting with non native lenses? (EF, EF-S, third party) at all? Another user reported this issue, but only with non EF-M glass.

Hold the phones!

I just put my (adapted) 100L on the M6ii, and it did slow substantially when stopped down while in 15 FPS mode (but curiously enough not while in 7 FPS mode).

No slowdown at all when I have any EF-M lenses mounted (Canon or Sigma). I haven't tested them All though.

R2

Right, so I just tested my adapted 100L on the M6II. At F2.8 in 14fps mode it gives exactly 14fps (within 0.1 either side). When I stopped it down to F4, it slowed to 11.3fps. Not a huge slowdown (and still faster than my previous speed demon, the 7DII), but definitely there. I tested it by shooting my iPhone in stopwatch mode, so I could see exactly how many frames it shot in the time. When I tested my Sigma 16 F1.4 at F2.8, I got 14fps, so no slowdown there. What did your M6II slowdown to with the 100L? And what did you stop it down to? Pretty much the only lens I use at 14fps with my M6II is the Canon 70-200 F2.8L IS II, and, like you, I'm always shooting that wide open (that's the point of that lens), so I'm not going to notice a slowdown.

Interesting findings you guys! Hopefully things get resolved in the next round of Canon's mirrorless (or maybe the RP and R have fixed this already?)

 Wintereater's gear list:Wintereater's gear list
Canon EOS M6 II Canon EF-M 22mm f/2 STM Sigma 150-600mm F5-6.3 | C Canon EF-M 15-45mm F3.5-6.3 IS STM +2 more
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