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R5II Precapture

dj63401
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p.2 #1 · p.2 #1 · R5II Precapture

arbitrage wrote:
So are you saying the precapture is always shooting at 30FPS, saves 0.5s=15 shots and then if you have selected say 15 FPS it shoots 15FPS after you press the shutter but still has shot 15 frames at 30FPS before the full shutter press?

That could actually be how it is working. May explain all the confusing reports out there.
Please test this more!! I'd also be interested to know if you hold the half-shutter for less than 1/2 second do you get a smaller number of shots than 15? Or is it really odd and only saves shots for precapture once...Show more →

Yes, that was how my test yesterday was.
I also just tried as short a shutter push after the 1/2 second half press on 1 of my trials and I got 16 shots, 15 pre and 1 with shutter activation. Also, I just tried timing the half press shorter than 1/2 second, and I was able to get 2 precapture, 6 precapture and 9 precapture. You can see a count down in upper left as the 1/2 second goes by.

Aug 20, 2024 at 02:49 PM

dj63401
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p.2 #2 · p.2 #2 · R5II Precapture

KINGOFKNGS wrote:
Can you hold down back button focus and then half-press the shutter button to start precapture when you want to use it that way?

Yes, just did it.

Aug 20, 2024 at 02:50 PM

dj63401
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p.2 #3 · p.2 #3 · R5II Precapture

stanj wrote:
Wait that math doesn't add up. It if always captured 1/2s, then it should not always be 15 frames. If you had frame rate set to 5, then 15 frames would be 3s, not 1/2s.

One of the numbers isn't right, unless precapture is always running at 30fps, regardless of actual set frame rate.
Seems precapture always runs at 30 fps. Edit, I was wrong. Precapture is 15 frames, and can take longer than 1/2 second, if you hold 1/2 press long enough.

Edited on Sep 04, 2024 at 05:54 AM · View previous versions

Aug 20, 2024 at 02:52 PM

arbitrage
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p.2 #4 · p.2 #4 · R5II Precapture

dj63401 wrote:
Yes, that was how my test yesterday was.
I also just tried as short a shutter push after the 1/2 second half press on 1 of my trials and I got 16 shots, 15 pre and 1 with shutter activation. Also, I just tried timing the half press shorter than 1/2 second, and I was able to get 2 precapture, 6 precapture and 9 precapture. You can see a count down in upper left as the 1/2 second goes by.

Thanks for testing that. That seems it would be the logical way for it to work for 1/2 press less than 0.5s.
Still an odd choice to run the precapture portion at 30FPS all the time.

Aug 20, 2024 at 04:22 PM

arbitrage
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p.2 #5 · p.2 #5 · R5II Precapture

I've been a dedicated shutter AF shooter shortly after switching to MILCs where as I was a dedicated BBF shooter with DSLRs.
My definition of the two is still the traditional...if shutter activates AF then that is shutter AF, if shutter only meters then that is BBF.
But as most do, I use my back buttons to modify my basic shutter AF settings all the time. So a lot of the time I am pressing one of the my back buttons.

That all said, from what I've read so far with the R5II and pre-capture I think I would actually switch to being a BBF shooter and disable the shutter. This is because it allows you to leave pre-capture on all the time but it would only activate if you half press the shutter. Therefore you could do all your AF with the back buttons and if you don't need pre-capture you just hit the shutter to take shots and it won't have buffered any pre-capture frames. Want precapture?....hold both your AF back button and half-press the shutter...precapture will buffer the 15 shots and when you fully hit the shutter they are saved. No menu diving to turn on/off precapture. Now if Canon adds a custom button option to toggle pre-capture on/off then I'd go back to shutter focus as I've been used to for the past 6 years. But for R5II because of pre-capture I'd turn from a shutter shooter with back button modification into a back button shooter with shutter button modification.

Aug 22, 2024 at 08:28 AM

Llewtwo
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p.2 #6 · p.2 #6 · R5II Precapture

I have the body and just beginning to sort it out. I was intrigued by the precapture feature but I suspect like the eye control on the R3 I won't use it as much as I thought I would. I don't shoot in RAW generally so having 15 RAW frames will be a lot to process even if I go back and forth between precapture and not. I normally don't take bursts of 15 frames and so when you add it up it's a lot of frames to cull and edit especially with the higher FPS of these new bodies. Yes, it's great to get even better peak action as a product of the additional FPS but it adds a lot to the volume of images to cull and edit. My first impression is that it is a very good body but it didn't seem better than my R3 really. I really haven't used it long enough to get a good feel.

Aug 22, 2024 at 09:21 AM

thedutt
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p.2 #7 · p.2 #7 · R5II Precapture

Confirmed by personal experience yesterday and canon rep a week ago that it only works with shutter half pressed. Based on very limited testing yesterday, it seemed like it does not precapture until focus is acquired - at least the precature icon did not appear in the viewfinder.

Despite initial disappointment with my shooting style, when I am actively waiting to take a shot, I often have the shutter half pressed for a smooth shutter engagement. So its likely an non issue.

Overall, this is the best new feature in R5II, and one that I wont be able to live without, though the rest so far is meh for wildlife.

Aug 22, 2024 at 09:37 AM

Mike Jacks0n
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p.2 #8 · p.2 #8 · R5II Precapture

Pre-shooting works the way they described it, IMO (though I haven't checked how it works for different shooting speeds). Pre-shooting is definitely the standout feature. And I can't see myself buying another camera that doesn't have it. Unfortunately, there is no quick one button toggle for it (was really hoping Recall shooting function was going to work). But because I like back button focus, the jab method and leaving it always on works OK. Terrible that we have to jab the shutter, but its a workaround that allows you to choose when you want to use it and not. Still generates extra images, but its workable.

Anyone else noticing this?

I noticed when I'm in the EVF, focusing (back button), using Manual mode, sometimes I can't change the shutter speed (with the front wheel) without letting go of the back button focus. Sometimes you just want to bump the exposure up or down but sometimes it forces you to stop what your doing and do it effectively with no other actions being performed (EVF use is still OK). For me its wasn't occurring every time, but I noticed it a few times.

Aug 22, 2024 at 10:35 AM

Visually Oriented
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p.2 #9 · p.2 #9 · R5II Precapture

arbitrage wrote:
Thanks for testing that. That seems it would be the logical way for it to work for 1/2 press less than 0.5s.
Still an odd choice to run the precapture portion at 30FPS all the time.

To be clear, pre-continuos shooting does not always run at 30 fps. It operates at what-ever drive speed is selected. If you have the camera set at 5 fps then that is the speed pre-continuos shooting works at. It does capture 15 frames IF the shutter button is half-pressed long enough to capture 15 shots at the selected drive speed. So if the camera is in electronic shutter at 5fps you have to half-press the shutter for at least 3 seconds before fully depressing the shutter button for the camera to capture 15 frames.

Aug 22, 2024 at 10:46 AM

lighthound
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p.2 #10 · p.2 #10 · R5II Precapture

arbitrage wrote:
Therefore you could do all your AF with the back buttons and if you don't need pre-capture you just hit the shutter to take shots and it won't have buffered any pre-capture frames. Want precapture?....hold both your AF back button and half-press the shutter...precapture will buffer the 15 shots and when you fully hit the shutter they are saved.

This is how I'm understanding how it works as well. And as a triple BBF guy, this makes me very happy to hear.
Even if they give us a FW update that allows us to turn it on/off with a button, I think I would prefer to always have it enabled and instantly be able to pre-capture when needed without having to press a button to turn it on. I think it's a perfect implementation just the way it is for my style / configuration.

One question I have is how long do these 15 frames remain active after a 1/2 shutter press?
In other words. If you 1/2 press the shutter then release it then within a second later fully press the shutter, will you still end up with those 15 pre-capture frames or does it "reset/clear" the instant you release the 1/2 shutter press?

Aug 22, 2024 at 10:51 AM

lighthound
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p.2 #11 · p.2 #11 · R5II Precapture

Mike Jacks0n wrote:
Anyone else noticing this?

I noticed when I'm in the EVF, focusing (back button), using Manual mode, sometimes I can't change the shutter speed (with the front wheel) without letting go of the back button focus. Sometimes you just want to bump the exposure up or down but sometimes it forces you to stop what your doing and do it effectively with no other actions being performed (EVF use is still OK). For me its wasn't occurring every time, but I noticed it a few times.

This sounds like a bug that needs to be fixed with FW. Canon needs to be aware of little quirks like this. Who or how do you contact the right people at Canon with such things?

Aug 22, 2024 at 10:56 AM

arbitrage
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p.2 #12 · p.2 #12 · R5II Precapture

Visually Oriented wrote:
To be clear, pre-continuos shooting does not always run at 30 fps. It operates at what-ever drive speed is selected. If you have the camera set at 5 fps then that is the speed pre-continuos shooting works at. It does capture 15 frames IF the shutter button is half-pressed long enough to capture 15 shots at the selected drive speed. So if the camera is in electronic shutter at 5fps you have to half-press the shutter for at least 3 seconds before fully depressing the shutter button for the camera to capture 15 frames.

Ok. That is how I thought it would work initially. But that isn't what others said earlier. They were finding 15 shots but only going back 0.5s in time. Not 15 shots going back 1.5s if at 10FPS or 15 shots going back 0.75s at 20FPS.
So I'm confused.
The camera will be in my hands by 5:30PM today so I will test myself.

Aug 22, 2024 at 11:02 AM

RAF09
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p.2 #13 · p.2 #13 · R5II Precapture

lighthound wrote:
This is how I'm understanding how it works as well. And as a triple BBF guy, this makes me very happy to hear.
Even if they give us a FW update that allows us to turn it on/off with a button, I think I would prefer to always have it enabled and instantly be able to pre-capture when needed without having to press a button to turn it on. I think it's a perfect implementation just the way it is for my style / configuration.

One question I have is how long do these 15 frames remain active after a...Show more →

From my limited testing it appears the moment you release the 1/2 press the images are gone. Although the full press of shutter button seems stiffer than the R5 was so I'm getting more than one shot pre press, but that's on me.

Aug 22, 2024 at 11:06 AM

Mike Jacks0n
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p.2 #14 · p.2 #14 · R5II Precapture

lighthound wrote:
This sounds like a bug that needs to be fixed with FW. Canon needs to be aware of little quirks like this. Who or how do you contact the right people at Canon with such things?

In the past, I've sent them via email. On the R5, the one I sent got fixed in the R5II, but I'm guessing the R5 didn't have the horsepower to manage it so they just swept it under the rug. BTW, that was fringe issue where using the EVF when clearing the buffer significantly slowed down the write speed. Again, no longer occurring in the R5II.

Aug 22, 2024 at 11:25 AM

randomguy
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p.2 #15 · p.2 #15 · R5II Precapture

One thing I find a bit curious is that the R5 II uses slower readout in all video mode like almost all stills cameras with stacked sensors before it. Why would they do that if the sensor can sustain fast readout while reading the full sensor at 30FPS in pre capture in stills mode?

Does it readout as fast as regular stills while doing pre capture or does it switch to video readout speeds like the Z8/Z9 does?

Aug 22, 2024 at 11:46 AM

mogul
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p.2 #16 · p.2 #16 · R5II Precapture

Heat?

Aug 22, 2024 at 12:16 PM

alundeb
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p.2 #17 · p.2 #17 · R5II Precapture

mogul wrote:
Heat?

As far as we know, no R5II has gone up in smoke and fire, yet.

Aug 22, 2024 at 12:19 PM

Mike Jacks0n
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p.2 #18 · p.2 #18 · R5II Precapture

mogul wrote:
Heat?

It does get quite hot in hand, but no heat warnings for me. But I'm not a video guy so, not the best person to get overheating info from. In all honesty, just setting it up got it pretty warm. Not sure what did it, because its not always working hard.

Aug 22, 2024 at 12:29 PM

arbitrage
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p.2 #19 · p.2 #19 · R5II Precapture

lighthound wrote:
This is how I'm understanding how it works as well. And as a triple BBF guy, this makes me very happy to hear.
Even if they give us a FW update that allows us to turn it on/off with a button, I think I would prefer to always have it enabled and instantly be able to pre-capture when needed without having to press a button to turn it on. I think it's a perfect implementation just the way it is for my style / configuration.

One question I have is how long do these 15 frames remain active after a...Show more →

Pretty sure they will be gone instantly if you release the 1/2 press. This is how it worked on A9III, Z9 and OM-1 which I've tried precapture on in the past.

I will have the camera in my yard this evening. Will do some pre-capture of finches launching to and from feeders and will shoot some hummers feasting on the flowers. Then tomorrow will hopefully get the swallows and some other subjects if the rain stays away.

Aug 22, 2024 at 12:32 PM

Mike Jacks0n
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p.2 #20 · p.2 #20 · R5II Precapture

randomguy wrote:
One thing I find a bit curious is that the R5 II uses slower readout in all video mode like almost all stills cameras with stacked sensors before it. Why would they do that if the sensor can sustain fast readout while reading the full sensor at 30FPS in pre capture in stills mode?

Does it readout as fast as regular stills while doing pre capture or does it switch to video readout speeds like the Z8/Z9 does?

I'd imagine its more to do with the processing needed. Video is not generally a clean read off the sensor (line skipping, pixel binning, down-sampling, etc). Depending on how it processed, I can see why it could slow down things. But... I'm not an electronics engineer and would have to defer to others with more background on it.

Aug 22, 2024 at 12:36 PM

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