Canon officially announces the development of the RF 100-500 f/4.5-7.1L IS USM, 1.4x and 2.0x extenders

SecureGSM

2 x 5D IV
Feb 26, 2017
1,598
565
oh please quit making sense. these guys just wanna cry about something to keep the nikonians company :)
It won’t be at F5.6 at 400mm. It will be at F6.3 or slower. Otherwise it will be the size of 100-400 girth and weight
Look at sigma and tamron 100-400/xx - 6.3 lenses. That’s a design prototype But scales up to 100-500. And those 100-400 lenses are dirt cheap.
 

brad-man

Semi-Reactive Member
Jun 6, 2012
1,422
203
S Florida
Do you actually know much about lens design? If you do, I'll be happy to learn from you. Please show us a ray diagram of how pulling the objective lens forward makes a 400mm into a 500mm.
Lens designing is what he does at night in front of a keyboard...
 

Dragon

EF 800L
May 29, 2019
138
120
?? A 500mm lens + 1.4xTC on a 45 Mpx FF camera gives an equivalence of reach of a 515mm on a 90D. Basically, a 700mm lens on a 45 Mpx FF gives a very similar field of view and resolution to a 500mm on a 90D or M6 II.
Sorry I wasn't clear in my use of "equivalence". I was comparing to full frame and allowing that the R cameras can take an APS-C slice (in this case about 17.5 MP). The 90D is in a different league (I have one), but it is also on the noisy side at pixel level and higher ISOs (not a criticism, but rather just a consequence of such small pixels). The 17.5 MP aps-c area of the R6 should have noticeably better pixel level noise than the 90D. It probably won't be quite as croppable, but if the new AA filter used in 1dxIII is also used in the R5, then some of that ground may be gained back. I would expect at least 7D II equivalence in the ability to crop with much better DR and some better S/N at high ISO and I think that explains the absence of a 7D III. The early specs show the R5 as having a faster capture rate at FF than the 7DII at APS C with a mechanical shutter and double the rate with an electronic shutter. That means the historical readout rate advantage of APS-c is gone unless you hypothesize a 7DIII with a 1DXIII shutter and that would probably cost as much as the R5. Certainly for capturing fleeting subjects (like birds), being able to capture the FF area is a huge advantage. I have found this to be totally true of the 5DSr which has essentially equal pixel level resolution to 7DII, but without high frame rate of the R5. For those wanting 90D reach, the R5s will still likely have at least 10fps with mechanical shutter, but with a pixel level noise penalty due to the small pixels. Either one will be killer for BIF shots.
 

SteveC

M6 mk II
Sep 3, 2019
480
342
He said "...all the designer basically (simplistically) needs to do..."

Is nobody getting enough fiber in their diet?
He did say that, yes.

But he went beyond saying that they could do that, to, in essence, that they DID do that. He asserts that the lens will be f/5.6 at 400mm, on the basis of nothing whatsoever. He's asserting his opinion as fact.

Now I agree that IF it turns out to be f/5.6@400mm, then the complaints are groundless, and they really did just extend the range without compromising what was already there. But others think it's possible that it's going to be f/6.3 at 400, in which case the now-old 100-400 L II can do 400mm better than this lens can, and it's not an improvement. We can't tell either way at this point, so saying it WILL be one way or the other is a groundless assertion.

So, contrary to your assertion that he made no assertion, he did make assertions.

(Note: I actually usually like Optics Patent's attitude; he regularly calls people out for arguing that something is useless because they personally don't want it, for instance. But in this particular case, he's jumped to what, for all the world, looks like an unwarranted conclusion and argued on that basis (an argument that would be good IF the conclusion were warranted). People are calling him on it. He can either demonstrate he's actually got good reason to believe what he says...or continue to take the heat.)

EDIT: rephrase without misleading quote marks.
 
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Sep 13, 2014
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The Sony 200-600mm is the big contender here... price, aperture, weight.... 500mm on full frame is short for wildlife, I hope the aps-c is coming to the R series...
 

SecureGSM

2 x 5D IV
Feb 26, 2017
1,598
565
Perhaps Canon should have sold this as the "RF 100-400 f/4.5-f/5.6 with 1.25x extension functionality"

All the gear warriors who are so upset at the shame of buying an f/7.1 lens would then be quiet.
Is it F5.6 at 400mm end though? Slim chances.
 
Apr 29, 2019
2
1
7.1? What's that with the teleconverter? Ugh..

Not what I was hoping for. I shoot F.8 with my 100-400L II with the 1.4. Looks like that will continue to be the better combo unless I'm missing something.
You will be able to shoot F8 @400mm with the 1.4x. But you will have the chance for zooming in 20% beyond, just not f8.
If this lens is optically as expected from an RF this will be my walk and shoot for wildlife, ...
A bigger lens will never get this usage, i.e. the 200-400 f4 is far too heavy and bulky for this.
 
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AlanF

Canon 5DSR II
Aug 16, 2012
6,226
4,108
You will be able to shoot F8 @400mm with the 1.4x. But you will have the chance for zooming in 20% beyond, just not f8.
If this lens is optically as expected from an RF this will be my walk and shoot for wildlife, ...
A bigger lens will never get this usage, i.e. the 200-400 f4 is far too heavy and bulky for this.
Only if it is f/5.6 at 400mm, and we don’t know if that is so. I agree that it will be a nice lens to walk around with.
 

ozturert

EOS 80D
Jan 16, 2019
108
85
Yes I will. Trust me on that one.
I think you didn't get my point. With the new lens, without teleconverter you get a comparable reach and aperture against 100-400mm + 1.4x. 500 v 560mm isnt't too much. You can still attach 1.4x to 100-500mm, of course. I think EOS R can AF down to f11, I'm sure R5 will do it too.