Canon M5 Anomoly.

Dale.

Dale.

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Dale.
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I bought myself a brand new M5 last year. It was meant as a back up to my 5Div and also, a size and weight thing for carrying into Kingfisher locations. I love the M5, it has blown me out of the water, for such a small thing and crop sensor too.

The M5 is rated at 7fps, or upto 9. My 5D is also 7fps so if either camera slows down, I notice it straightaway.

I have noticed on a few occasions that the M5 frame rate slows down, to at a guess, 4 fps, or so. I though it might've been due to a setting somewhere slowing it down but I have done 3 or 4 camera resets now and intiailly, the camera is fine, easily doing the 7fps but not long after, sometimes slows down again. After each reset, I put the settings I like back one by one, test the frame rate but it's fine, even after I have put all my settings back in.

Today though, I was at the hide. I'm trying BIF at the hide and wanted to try the little M5 with it today as the light was good, so I could get away with ISO 1000 easily. The camera was firing away happily at 7fps on the weekend but today, in the hide, it slowed down again. I reset the camera again and boom, immediately got the 7fps back. This time, I lived with the factory settings, as fiddling with settings wasn't ideal at the time. I only changed to RAW, altered the ISO and white balance, that was it. I was shooting in manual, so changed the shutter speed to 1/2000 sec.

The only other thing I did was zoom the lens to about 330 mm (Canon 100-400L Mk1) and change the aperture. Eureka, as soon as I changed from f5 to f8, to get some DOF, the camera slowed down. So it would seem, it's the aperture setting that slows it down. :thinking:

Shutter speed was still 1/2000 sec. I'm using the canon EF-M adapter, not a thrid party one, so I can, in that respect rule out the adapter.

I put the same lens on my 5D, same settings, and f8. I still got 7fps with the 5D, so it seems to be a phenomena with the M5, or possibly adapted, albeit Canon glass.

Anybody else experienced this with an M5, or any other camera, or have any thoughts?
 
Gav-canon said:
Battery power level could affect FPS?
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That's a point actually, I did get the battery warning. It's on charge now as I'm off out with it soon, I will see what happens. (y)
 
I'm pretty sure aperture affects fps and I imagine the M5 would struggle more than a 5DIV due to battery voltage. I doubt the M5 was really meant to drive bigish lenses (although I have used mine with the 150-600mm Sport which looked absolutely ridiculous))
 
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I think I read in the 5DIV manual ISO can affect FPS?

Edit, sorry ment buffer size
 
Mike.P said:
I'm pretty sure aperture affects fps and I imagine the M5 would struggle more than a 5DIV due to battery voltage. I doubt the M5 was really meant to drive bigish lenses (although I have used mine with the 150-600mm Sport which looked absolutely ridiculous))
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Something was telling it did but I wasn't absolutely sure. I've never experienced it with other cameras. I've had the 150-600 C on my M5, it then becomes a bit of a brute and looks a bit daft, but 960mm. (y)


Gav-canon said:
I think I read in the 5DIV manual ISO can affect FPS?

Edit, sorry ment buffer size
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I will look it up. (y)

You have a 5Div Gav?
 
Dale. said:
Something was telling it did but I wasn't absolutely sure. I've never experienced it with other cameras. I've had the 150-600 C on my M5, it then becomes a bit of a brute and looks a bit daft, but 960mm. (y)
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Wouldn't worry about it tbh, this time next week we will have much more interesting things to talk about ..... hopefully :LOL:
 
Dale. said:
I will look it up. (y)

You have a 5Div Gav?
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In picked one up a few weeks back... all the gear no idea :LOL:

Sorry for delay, just got in from work, you've probably found it now, but screen shot of the manual (5dIV) but may apply for a few models?

Did read about battery power online and there was a link to high frame rate, once battery drop below a level.(was for a R model, not sure which now)

I just tried the 5DIV, Burst indictor does drop with ISO adjustments, my 90D has burst of 39 images but drops to 29 after ISO1000, I've never noticed as never gone more than around 10 in a burst

Edit- just had a play with the 90D, for every ISO adjustment the buffer level decreases

Screenshot_20220518-172359_Drive.jpg
 
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Gav-canon said:
Hope you get to the bottom of the issue (y)
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I tried my 300L f4 last night with the M5, same result though. The 300 is a smaller lens than the 100-400, which made me curious.

I will try a 24-105 later.
 
Dale. said:
I tried my 300L f4 last night with the M5, same result though. The 300 is a smaller lens than the 100-400, which made me curious.

I will try a 24-105 later.
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Does it speed up if you use ISO 100?

Would a Firmware 'refresh'/update help?
 
Gav-canon said:
Does it speed up if you use ISO 100?

Would a Firmware 'refresh'/update help?
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I've not tried the ISO thing as yet Bud. I will check the firmware but I think it's up to date, unless there been a quite recent one. (y)
 
Mike.P said:
So what settings are you using Dale?

I will put mine to exactly yours and try it.
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Cool, thanks.

Intiially, ISO 2500, f5.6 on a 100-400L Mk1. Shutter speed was around 1/1600.

Yesterday, I was at ISO 1000 and it still slowed down if I closed the aperture down.

I noticed that the frames per second slowed down if I changed the aperture from it's widest, which is f5.6 at 400mm. If I went to f7.1 or f8, the fps slowed to 4 (or so) fps.

So would you mind trying yours at f5.6 (or biggest aperture of your lens), then f8 please?

Ta.
 
Mike.P said:
Dale, are you changing focus modes?

If I use single spot then it shoots the same speed at f/5.6 & f/8
If I use either of the tracking modes it shoots full speed at 5.6 but slows down at f/8
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Using single point Mike, the biggest area though.

Mind me asking what lens you tried with please?
 
Would AF servo be making a differance as it may take a bit of time to think?

Just thinking if less light it may start to struggle on focus

Is there a focus priority setting on those that is switch to high, my 90D can bog down with it

I'll duck out now, good luck (y)
 
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Gav-canon said:
I'll duck out now, good luck (y)
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No Gav, stick around, it's all food for thought. (y)

I usually use one shot AF, although for this, I am manually focusing for in flights, as I pre focus on where a bird is likely to fly through a given point. It's really fast and a small area. (y)
 
This is purely guessing but maybe when the ISO is higher and the aperture is smaller, the camera/lens opens up the aperture to focus before every shot then stops back down, fires and repeats until the button's released. As the aperture gets smaller, the FPS will drop - maybe not by much but every few ms will add up after a few shots.
 
Dale. said:
Using single point Mike, the biggest area though.

Mind me asking what lens you tried with please?
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Tried it with the 70-300mm L and 100-400mm MKII

I also tried it with a native ef-m 55-200mm and it didn't do it ... so then again I wondered if it something to do with the battery not being able to open and close the much larger aperture blades of the EF lenses .... Am I right in thinking every time the shutter is pressed the aperture blades open and close except when wide open which would mean more draw from the battery?

Do you have any ef-m lenses to try it with Dale?
 
I think you have a point Mike about the aperture blades. I've been digging today and that seems to be an issue with bigger lenses. I tried the same scenario with an old Sigma 17-70 f2.8 and I got the full 7 fps at 2.8 and it slowed down only marginally, 5 at a guess at f8, with the smaller lens, maybe due to the smaller blades.

If I have this bit right, I think the blades open wide between shots in order to AF? Bigger blades will take more effort to move, hence the slower rate at smaller apertures.

To be fair to the M5, it is a little gem but this maybe another limit I've found.

I don't have any EF-M lenses.

Might be something I have to live with, until I get my R7. ;)

Thanks for taking the time Mike.
 
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Good to see you may have found the answer, throwing the blades at each shot is probably going to cause a drag on power...

Man maths = time for upgrade :LOL:
 
Dale. said:
To be fair to the M5, it is a little gem but this maybe another limit I've found.

I don't have any EF-M lenses.

Might be something I have to live with, until I get my R7. ;)
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Forget the M series Dale, I think Canon have.

Must admit I really like mine but have a cheap listing weekend on Ebay and am thinking it may be worth selling the lot while it is still a current system.
 
Mike.P said:
Forget the M series Dale, I think Canon have.

Must admit I really like mine but have a cheap listing weekend on Ebay and am thinking it may be worth selling the lot while it is still a current system.
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I've enjoyed the M5, it has a cracking sensor, same as 80D I believe. I replaced a 7D with the M5 (I still have the 7D, in a drawer) and I prefer the M5's sensor, I never got on with the 7D.

My plan is to sell 3 cameras I have (7D, M5 and a Fuji X-T10 with 3 lenses) although not quite yet, I have been hanging on to them to part fund the R7 if/when it comes.

I may just keep the M5 though and repurpose it as a walkabout, it's very handy with the 17-70 f2.8. My main camera is currently a 5Div.

This has been interesting, it became a challenge to figure out what was going on but I think we've got it now. I'm happy now I know. (y)
 
Dale. said:
My plan is to sell 3 cameras I have (7D, M5 and a Fuji X-T10 with 3 lenses) although not quite yet, I have been hanging on to them to part fund the R7 if/when it comes.
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What concerns me slightly is that we have heard nothing about the R7 since being told it would be announced on the 24th. Normally we would have had the full specs leaked by now and probably a picture or two of the body.
 
What card are you using in the M5?
 
Mike.P said:
What concerns me slightly is that we have heard nothing about the R7 since being told it would be announced on the 24th. Normally we would have had the full specs leaked by now and probably a picture or two of the body.
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..............and the 24th is a Tuesday, not the usual Thursday for Canon announcements.

admirable said:
What card are you using in the M5?
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Sandisk Extreme Pro, SDXC, 170MB/s, 128GB. (y)

I bought 2 for my 5Div and one found its way into the M5.
 
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