Patent: Canon RF mount Big White Lenses

risto0

EOS M50
May 27, 2013
33
34
Estonia
www.ristohunt.eu
I had a hope Canon will do a mount conversion service on the EF 600mm f/4L IS USM III and EF 400mm f/2.8L IS III, but if they are going to introduce new lens probably they are not going to do mount conversion on the EF version
why would you prefer to mount convert your lens? Isn't it so that one day when you decide to sell your lens, there are more potential buyers for EF than for RF mount because EF can be adapted to other systems as well? Wouldn't it more beneficial to purchase EF-RF adapter and leave it to the lens ( = more options in future)
 
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rawshooter

I'm New Here
Dec 19, 2014
17
16
Wow the difference between the first 400 2.8 IS and the III is 2.530g. That's almost half the weight. Yea if that drops the used prices I'll upgrade. :D
 

risto0

EOS M50
May 27, 2013
33
34
Estonia
www.ristohunt.eu
I wonder what benefits might RF 600mm F4 have over EF 600mm F4 III. (using EF-RF adapter is not a concern therefore mount difference does not matter here).
 
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Mr Majestyk

EOS RP
Feb 20, 2016
414
274
Australia
I'm would be disappointed if the 300 weighs in at an more than 2kg and the 500 2.5kg. If they can reduce the weight in line with the EF 400 and 600 vIII I'll eventually swap both my older 300 v1 and 500 vII.
 

Fischer

EOS RP
Mar 17, 2020
352
248
Yes! Yes! Yes! RF 300mm f/2.8 - bring it on. I'm ready to preorder. It'll probably be an eye-watering 7.500$ - but its my biggest yearning having switched to Canon mirrorless. :love:
 
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tron

EOS-1D X Mark III
CR Pro
Nov 8, 2011
5,124
1,503
I wonder what benefits might RF 600mm F4 have over EF 600mm F4 III. (using EF-RF adapter is not a concern therefore mount difference does not matter here).
It will certainly have an interesting RF designation in front of the 600 vs a rather boring EF one :ROFLMAO:
 
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SwissFrank

from EOS 1N to R
Dec 9, 2018
743
403
Fair enough, we all love the 150mm aperture series but this time around I want not only the 800/5.6 and 1200/8, but I also want a 300/2, 200/1.4, and 135/1.
 

AlanF

Stay at home
CR Pro
Aug 16, 2012
9,725
14,942
Fair enough, we all love the 150mm aperture series but this time around I want not only the 800/5.6 and 1200/8, but I also want a 300/2, 200/1.4, and 135/1.
You not only have to have deep pockets to pay for that lot but also strong musculature.
 
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Mr Majestyk

EOS RP
Feb 20, 2016
414
274
Australia
:sleep: wake up and face reality... :eek:
I have, too bad you seem to be stuck in the past. Already the old 300 is only 2.3kg, so hardly a stretch to achieve 2kg with the new lightweight magnesium alloys and redesigned optics. I'll bet you also dismissed the idea of a 400 f/2.8 under 3kg too. LOL
 
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