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So is the Canon R5 a bird photography body? (2 Viewers)

bkdc

Well-known member
I imagine the RF lens should perform better than it's EF equivalent but there are few you can compare at the moment. I'm not going to let go of my 500mm f4 any time soon!

I was shocked at the AF performance difference between the EF24-70 and the RF24-70 2.8 lenses. The speed difference and hit rate especially in challenging light is like night and day. We will be rewarded with a flood of large aperture RF telephotos in the coming year.
 

Dave Williams

Well-known member
I was shocked at the AF performance difference between the EF24-70 and the RF24-70 2.8 lenses. The speed difference and hit rate especially in challenging light is like night and day. We will be rewarded with a flood of large aperture RF telephotos in the coming year.
I certainly wouldn't question your comparisons and would in all probability expect any like for like RF lens to be a bit better but out of interest are your observations based on using both lenses at the same time ,same subject, same light etc or a more subjective kind of thought process? I have had the quickest of tests using the RF100-500 and it was instantly fast to focus but so is my 100-400MK 2 when using the adapter as is my 500mm Mk2 with the 1.4TC Mk3.
In all probability I will get the 100-500 because 20% extra reach is not insignificant but neither is the cost of buying the lens plus RF 1.4 TC.
 

bkdc

Well-known member
Same conditions. But the difference was in horrible light. In excellent light, the EF does just great. Thank you Canon for making the RF body backwards compatible. The R5 and R6 AF systems are a tremendous upgrade to anything unless you’re used to a 1Dx Mk3 so nailing shots with the newest mirrorless bodies is so much easier. The hardest target is a running toddler in a dimly lit room. :)
 
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Bafty

Well-known member
Must say with the brief outing I've had with the R5 I've not noticed a lot of difference with focus lock on the EF500mm if anything it locks a little quicker but that might be the camera's AF system. I've not read that Canon are producing a RF 500/600 any time soon but assume they will eventually, given the EF500 at WEX is now pushing £10k I'm unlikely to take a punt on a RF version

Another image with the R5...Little Grebe
 

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Kevin Wade

Well-known member
Here's a picture taken this morning with the R5 and the 800mm f11 is stm. Its a great lens to carry round, especially when I'm out walking the dogs and gives my shoulder a rest from carrying the 500 f4. This was taken with a shutter speed of 1/3200 at iso 1000. lbbg2.jpg
 

Weasel1

Active member
Supporter
United Kingdom
That's an excellent image, Kevin...have you tried the R5 with the 500 f4 / EF adapter?

I was considering moving to mirrorless ( from my 1D3 and 7D ) to a R5 / R6 but, they would have to work with my 500 f4 and the rest of my EF lenses.
 

Dave Williams

Well-known member
That's an excellent image, Kevin...have you tried the R5 with the 500 f4 / EF adapter?

I was considering moving to mirrorless ( from my 1D3 and 7D ) to a R5 / R6 but, they would have to work with my 500 f4 and the rest of my EF lenses.
They do as long as you have the EF-EOSR adapter. I think that perhaps the electronics on a Mk1 500mm f4 might not be as good/fast as a Mk2 but they will work.
 

Weasel1

Active member
Supporter
United Kingdom
Thanks Dave...I'd love a 500 f4 Mk2 but, the ridiculous £9500 price tag is way out of my reach...thinking back, in 2006 I paid £4300 for my 500f4LIS which makes todays prices just crazy.
 

Kevin Wade

Well-known member
That's an excellent image, Kevin...have you tried the R5 with the 500 f4 / EF adapter?

Yes. I have the mark i, but it still works extremely well with the EF/RF control ring adapter - here's a photo with this combination.
https://www.birdforum.net/gallery/black-wheatear.651384/
The only thing is that I found it is better with the IS turned off, since I found that it would be on all the time and therefore wears the battery down.
This combination is much better for birds in flight, since the limited field of view and smaller focus area of the 800mm f11 makes it difficult to keep small birds in flight to the centre of the focus area - although the subject/eye detection helps out greatly!
 

Dave Williams

Well-known member
Yes. I have the mark i, but it still works extremely well with the EF/RF control ring adapter - here's a photo with this combination.
https://www.birdforum.net/gallery/black-wheatear.651384/
The only thing is that I found it is better with the IS turned off, since I found that it would be on all the time and therefore wears the battery down.
This combination is much better for birds in flight, since the limited field of view and smaller focus area of the 800mm f11 makes it difficult to keep small birds in flight to the centre of the focus area - although the subject/eye detection helps out greatly!
I have looking at the 800mm f11 and debating should I get one. The price is very tempting but f11 isn't! You mention the smaller focus area, does that mean it doesn't cover the whole of the screen? I was amazed that all the focus points seem active when using my 100-400 with a 2x TC attached as it wouldn't AF at all other than in LiveView using my 1DX2.
 

Weasel1

Active member
Supporter
United Kingdom
Thanks Kevin...if I do go down the R5 / R6 route it's good to know that the 500 Mk1 is going to work, along with my other lenses.

Also, excellent picture of the Black Wheatear, really like that.
 

Barred Wobbler

Well-known member
The R5 and R6 contain Canon’s most advanced AF system. If you can’t make it work, it’s not the camera. :) And AF performance on RF lenses is definitely superior to AF performance on an EF lens with an adapter.
Do you think? My replacement R5 arrived half an hour ago.

This one works as it should.
 

Bafty

Well-known member
Another example of the images quality of the R5, taken yesterday of a Ring-necked Duck (vagrant to the UK) doing the rounds in Greater Manchester...Canon R5 + EF/EOS R Control Adaptor + EF 500mm mkII + 1.4 ext mkIII (all Canon kit)
 

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