Patent: Canon 100-400mm f/5.6-7.1

Act444

EOS 6D MK II
May 4, 2011
1,073
143
The only way this makes sense, IMO, is as an M lens. It would be nice, actually, to have the option of a native EF-M lens with more than 200mm of reach, even if that means f7.1 at the long end to keep it compact. Whatever.

Personally I think I’d rather hold out for a 600mm FF lens, though. Shots taken back in the day with my 7D left me wanting in terms of detail, etc...
 

Pape

EOS 7D MK II
Dec 31, 2018
552
336
The new restriction is that DLA starts happening around f/5.1 on the M6II. But DLA is not a cliff, so f/7.1 could very well be 'good enough'.
yeah i think all phone cameras go 2 stop under DLA straight to verge of cliff
 

Pape

EOS 7D MK II
Dec 31, 2018
552
336
I think they seriously try now make super sharp M lense ,lack of IS hints it.
Now we see what is possible when no need protect 1 serie and big whites :)
 

Dragon

EF 800L
May 29, 2019
181
150
oh woah could be amazin birdler lense for M cameras . Sharpest supertele ever made if made well?
Thank you canon confusing me even more about what to do next :p
So M5ii must be coming , and M barrel diameter isnt unbreakable law.
There isnt IS so M5ii got ibis?
Guys i would love to see your face if next M camera would be M1 :p would make some :O
It even makes sense ,camera for professional bird shooters
Given the layout, I think this will fit into the standard 61mm M series barrel diameter. If not, it will come very close. Take this, the 18-150, and the 11-22 and you have 17.6-576mm equivalent in a very small package with good to excellent IQ. I think M is here to stay for quite a while.
 
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koenkooi

EOS 6D MK II
Feb 25, 2015
879
661
Why are lenses for the EOS M restricted to 61mm diameter? As long as the rear diameter of the lens elements fits the bayonett, can't the front diameter be whatever it takes?
We can only guess to why, but Canon seems to really stick to that self-imposed restriction.
 
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AlanF

Stay alert, control the camera, save photos
Aug 16, 2012
6,496
5,141
yeah i think all phone cameras go 2 stop under DLA straight to verge of cliff
The DLA for a new iPhone is about f/2.4 and the various lenses vary from f/1.8 for the main to f/2.4 for the wide angle. The advantage of these very short focal lenses is that it is easy to get wide f-numbers to compensate for the small pixels of about 1.4 microns.
 
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dwarven

EOS T7i
Dec 12, 2019
91
116
So the "this new RF mount will allow some wild new lens designs, we can't wait to see what's in store" hype became "just get an adapter and use older glass".