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Canon R3 with EF Supertele = Better AF?

rscheffler
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p.2 #1 · p.2 #1 · Canon R3 with EF Supertele = Better AF?

dugballs wrote:
I use a monopod and have times used the LV of the 1Dx iii, it's fantastic to be honest, but really hard to wield a long supertelephoto without the camera body supported against my eye.

You could try using a rear display magnifier hood/loupe, though it still won't be as comfortable as looking through the viewfinder. It would really only be a stopgap measure if you want to stick with the 1DXIII a while longer. A current mirrorless camera will give you a better 'mirrorless' experience.

Oct 06, 2023 at 11:18 AM

artsupreme
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p.2 #2 · p.2 #2 · Canon R3 with EF Supertele = Better AF?

goalerjones wrote:
I'm loaning an R3 from Canon for the races at Santa Anita (horses) over the weekend of the 14th. I'll be using an adapted 300mk 2 and the RF85 1.2. I'm curious to see how the tracking and buffer compare to the R5.

The R3 gives you a lot more to choose from as it nails most everything, but that also means a lot more to cull and throw away. When I shoot the R3 and R5 side by side it's obvious the R3 is better, but with that said I don't feel I "miss the shot" with the old R5's.

The R3 shines in low light and is also good for the high burst feature it has.

Oct 06, 2023 at 11:31 AM

RKnecht
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p.2 #3 · p.2 #3 · Canon R3 with EF Supertele = Better AF?

I find the R3 with the 500 F4 USM II to be an absolutely amazing combo

Oct 06, 2023 at 05:50 PM

macwest
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p.2 #4 · p.2 #4 · Canon R3 with EF Supertele = Better AF?

stacked sensor vs Bsi.

Oct 06, 2023 at 06:17 PM

Mike Jacks0n
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p.2 #5 · p.2 #5 · Canon R3 with EF Supertele = Better AF?

dugballs wrote:
Yeah, hopefully I can get my hands on an R3 and run some tests. I wish it were easier! haha Oh well.

A couple of years ago when I was considering an R3, I run an AF test side by side using a video camera with a fairly high frame rate (to count frames in the video editing software) to see how much faster the R3 ran the 500L II over the R5. In that case, the difference wasn't terribly noticeable in practice, but the video told a different story. I found the R5 racked the entire focus range in .33 seconds and the R3 .24 seconds. This squares with Canon's marketing of the R3's AF being 30% faster.

Again, in practice the difference didn't seem notable, but the seat of the pants feel did seem a hair faster. That makes sense to me, as we almost never ask the system to focus the entire range, nor recognize easily that it took an extra .1 of a second. So, under normal circumstances, it's very likely that it will only be traveling half or 25% of the full range meaning that difference could be as little .05 or .025 of a second, which is almost negligible.

I chose to stay with my R5 but if I was using a 1Dx Mark III, I wouldn't hesitate for a .025 of a second to pull that trigger. The R3, IMO, is so much better, you couldn't pay me money to stay with the 1Dx Mark III.

Oct 06, 2023 at 10:36 PM

vbnut
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p.2 #6 · p.2 #6 · Canon R3 with EF Supertele = Better AF?

artsupreme wrote:
The R3 gives you a lot more to choose from as it nails most everything, but that also means a lot more to cull and throw away.

You don't have to shoot the R3 at 30 fps. You can also select 15 or 3 (electronic) or 12 or 8 (mechanical).

Oct 06, 2023 at 11:19 PM

gkinard1952
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p.2 #7 · p.2 #7 · Canon R3 with EF Supertele = Better AF?

Following, I am still shooting an old 7d II and want a pro body. Curious about AF , so far I have passed on all R body. I decided to switch but waiting on the latest news on AF. On older EF glass. I had the 1D mark IV. And hated that camera. I shoot birds but these sports threads are where I get my info...

Oct 07, 2023 at 07:36 AM

artsupreme
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p.2 #8 · p.2 #8 · Canon R3 with EF Supertele = Better AF?

vbnut wrote:
You don't have to shoot the R3 at 30 fps. You can also select 15 or 3 (electronic) or 12 or 8 (mechanical).

Yes but I feel 20fps is my sweet spot now so I dial up to 30 instead of down to 15.

Oct 07, 2023 at 08:36 AM

artsupreme
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p.2 #9 · p.2 #9 · Canon R3 with EF Supertele = Better AF?

gkinard1952 wrote:
Following, I am still shooting an old 7d II and want a pro body. Curious about AF , so far I have passed on all R body. I decided to switch but waiting on the latest news on AF. On older EF glass. I had the 1D mark IV. And hated that camera. I shoot birds but these sports threads are where I get my info...

You can get new R3’s here in the $4300-$4400 range but if I were you I would wait for the R5II

https://www.fredmiranda.com/forum/topic/1826418/0?keyword=R3#16352814

Oct 07, 2023 at 08:58 AM

Dave_E
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p.2 #10 · p.2 #10 · Canon R3 with EF Supertele = Better AF?

The r3 is excellent AF with the EF 500 f4 II. . The stacked sensor has no rolling shutter. Animal, people, and automobile AF that locks and tracks the subject. The R5 is great but the R3 a level better.

Dave

Oct 07, 2023 at 08:20 PM

Mike Jacks0n
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p.2 #11 · p.2 #11 · Canon R3 with EF Supertele = Better AF?

artsupreme wrote:
Yes but I feel 20fps is my sweet spot now so I dial up to 30 instead of down to 15.

I'm with you. 20FPS is pretty much that point were the returns start to diminish. But IMO, if performance is what you are after, dealing with the extra files generated should be the last thing to complain about. Speed gives you the best chance to convert an opportunity.

Sure, there are exceptions to the rule, but honestly... limiting useless images isn't that hard, even at 30FPS.

Oct 07, 2023 at 10:32 PM

gkinard1952
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p.2 #12 · p.2 #12 · Canon R3 with EF Supertele = Better AF?

artsupreme wrote:
You can get new R3’s here in the $4300-$4400 range but if I were you I would wait for the R5II

https://www.fredmiranda.com/forum/topic/1826418/0?keyword=R3#16352814

Yes, I am waiting on the R5II and the R1. I am most interested in the AF performance when on EF lenses. R3 doesn't have the MP count I want. I have two Canon lenses I really like and want to keep them. I know exactly what I want hopefully Canon will deliver..

Oct 08, 2023 at 08:00 AM

84west
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p.2 #13 · p.2 #13 · Canon R3 with EF Supertele = Better AF?

dugballs wrote:
I am a motorsports photographer and all year I have been dealing with what looks like pulsing of the AF when shooting cars head-on (using OVF) at 16fps with shutter speeds of atleast 1/2000 and higher. I'd get 1-2 images sharp, and then the next 3-4 would be out of focus slightly, and then sharp again, and then next 3-4 out of focus. etc. I tried all sorts of AF settings and in various conditions, positions, and I still get the same result. I was told that it's the nature of DSLR's and their AF (no idea).

Have you tried playing around with focus vs. release priority? I have definitely experienced this issue with the 1dx and 1dx mk II and with release priority it seemed the camera was releasing out of sync with the focus motors in the lens. Release priority can slow down your frame rate but if the camera isn't having issues tracking subjects then it isn't too noticeable and seems to ensure the release is on the exact moment the plane of focus comes back in line with the subject (if the camera decides something else is the subject then you are still out of luck). You could also try dial in your specific camera and lens combo's AF micro-adjustment.

As far as the r3 goes, I have only borrowed one for a few assignments but the AF was noticeably better performing in every way than my mk II, especially tracking subjects behind a fence/netting.

Oct 14, 2023 at 04:03 PM

goalerjones
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p.2 #14 · p.2 #14 · Canon R3 with EF Supertele = Better AF?

R3 came and went back to CPS. Never got a chance to test it. Got sick and couldn't use it for the event and I didn't feel like attacking the learning curve for the menus and setup. One thing I will say though, not a big fan of the on/off/lock switch or the fact I need to use 2 fingers to pull the back screen out.

Oct 18, 2023 at 01:09 AM

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