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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
R2D2 Forum Pro • Posts: 26,529
Re: Comparison with M6

Alastair Norcross wrote:

I still have my M6, as well as M6II, so I just tested the M6. Here's what I found. With EF-M mount lenses (I tested the EF-M 18-55 and the Sigma EF-M 16 F1.4) I notice no slowdown from 7fps when stopping down. However, when I use EF lenses with the adapter (I tested the EF 50 F1.8STM and the EF 85 F1.8), I do notice a significant slowdown when stopping down, even a little. I would say that it slows from 7fps to around 4fps. It's certainly a big enough difference that you can hear it right away. So, from this quick test at least, with the M6 it seems to be an adapter issue (I'm using Canon adapters).

Wow, thanks for testing Alastair!

I think the reason it doesn't ring a bell is that whenever I was shooting bursts, I was almost invariably at max aperture.  Tells me something about my shooting habits!

R2

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