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Canon Finally Fixes the R System

  
 
garyvot
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p.1 #1 · Canon Finally Fixes the R System


It's about damn time, haha:

https://www.dpreview.com/news/4566511083/canon-may-2026-accessory-launch-rf-rear-cap-remote-tripod-stand



May 13, 2026 at 08:59 AM
kirbic
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p.1 #2 · Canon Finally Fixes the R System


OMFG, they fixed the back cap! I am literally going to have to order a bunch of the new cap, as I am so tired of futzing to get the cap in the right orientation.


May 13, 2026 at 09:35 AM
rscheffler
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p.1 #3 · Canon Finally Fixes the R System


It should have been 'fixed' in the first place, in 2018 when the R system was launched.


May 13, 2026 at 10:04 AM
garyvot
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p.1 #4 · Canon Finally Fixes the R System


kirbic wrote:
OMFG, they fixed the back cap! I am literally going to have to order a bunch of the new cap, as I am so tired of futzing to get the cap in the right orientation.


Haha, yeah. I actually went the trouble of painting all of my rear caps with a little red dot so that it would be modestly less finicky to find the proper orientation.



May 13, 2026 at 10:24 AM
garyvot
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p.1 #5 · Canon Finally Fixes the R System


rscheffler wrote:
It should have been 'fixed' in the first place, in 2018 when the R system was launched.


Yes. This was one reason I initially thought I would just stick with EF lenses.

I never could understand how someone at Canon did not recognize this as an issue during design.



May 13, 2026 at 10:25 AM
jcolwell
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p.1 #6 · Canon Finally Fixes the R System


Glad I waited!


May 13, 2026 at 11:14 AM
Carlo_M
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p.1 #7 · Canon Finally Fixes the R System


Canon figured out how to squeeze $45 more dollars out of me...


May 13, 2026 at 12:46 PM
justashooter
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p.1 #8 · Canon Finally Fixes the R System


All Canon did was remove one of the "bayonets" on the cap. So, file off the "bayonet" that runs from about 1 o'clock to 3 o'clock (the longest one) when looking at the inside of the cap. I used a half-moon file and removed it from one of my caps with about 12 minutes of careful filing and it fits just fine at all three positions. And it even fit EF lenses. You can use a Dremel but I like the control of hand filing. I've done all five of my caps.



May 14, 2026 at 03:25 PM
garyvot
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p.1 #9 · Canon Finally Fixes the R System


justashooter wrote:
All Canon did was remove one of the "bayonets" on the cap. So, file off the "bayonet" that runs from about 1 o'clock to 3 o'clock (the longest one) when looking at the inside of the cap. I used a half-moon file and removed it from one of my caps with about 12 minutes of careful filing and it fits just fine at all three positions. And it even fit EF lenses. You can use a Dremel but I like the control of hand filing. I've done all five of my caps.


Nice. I'm still baffled as to how Canon thought this was a good idea... It's almost as if they intentionally did not want the caps to work with EF lenses at first...



May 14, 2026 at 03:47 PM
EB-1
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p.1 #10 · Canon Finally Fixes the R System


The problem Canon had was that the EF lens mount was already quite large and they did not want the RF to be any larger. So they had to create a worse bayonet with weird spacing. Now with only two lugs it will probably fall off after some wear and tear on the plastic.

EBH



May 14, 2026 at 05:26 PM
 


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BrianP
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p.1 #11 · Canon Finally Fixes the R System


Now that they fixed this, perhaps they can allow third party full frame lenses to be used as well! If they really want to one up Sony, they should do it without crippling them for things like FPS or TCs.

One can dream



May 14, 2026 at 05:40 PM
snegron7
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p.1 #12 · Canon Finally Fixes the R System


This is the first time I have ever "pre-ordered" anything!

On another note, I can only come up with 3 reasons why Canon designed the first RF caps so badly:

1. People who work for Canon don't actually use Canon gear.

2. A carefully plotted marketing ploy to get all of us Canon users go out and spend money on their "updated" caps. Just think about how much money they are making on these new caps; at least 800%.

3. A marketing sensation; build the world's most frustrating rear lens cap ever, create a universal hatred of said rear lens cap, then several years later release an "improved, updated" version to cause a social media frenzy. The publicity is priceless.



May 14, 2026 at 05:46 PM
MMP
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p.1 #13 · Canon Finally Fixes the R System


When I sold my 5D4 and bought the R5, I remember fiddling with the caps and thinking (only half jokingly) that I had made a grave mistake lol


May 14, 2026 at 06:06 PM
rscheffler
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p.1 #14 · Canon Finally Fixes the R System


justashooter wrote:
All Canon did was remove one of the "bayonets" on the cap. So, file off the "bayonet" that runs from about 1 o'clock to 3 o'clock (the longest one) when looking at the inside of the cap. I used a half-moon file and removed it from one of my caps with about 12 minutes of careful filing and it fits just fine at all three positions. And it even fit EF lenses. You can use a Dremel but I like the control of hand filing. I've done all five of my caps.


Yes, I experimented a while back on one of my RF rear caps and discovered this as well. But this oversight by Canon for 8 years would cost an untold number of lost man-hours if each of us were to carefully file all of our RF caps. Perhaps someone at Canon (or more likely, a committee) thought they were doing us a service with the original RF cap design when instead it created unnecessary frustration.



May 14, 2026 at 07:52 PM
Pixelpuffin
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p.1 #15 · Canon Finally Fixes the R System


jcolwell wrote:
Glad I waited!


🤣
————————————————
For once Pixel is lost for words
The amount of frustration the RF rear caps have caused me over the years…to the extent I often just made do with the lens attached as I couldn’t be arsed to faff about doing a one handed rubik cube impression whilst juggling 2 lenses on the fly!!

Absolutely insane oversight by canon!!



May 14, 2026 at 08:05 PM
MintMar
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p.1 #16 · Canon Finally Fixes the R System


Fortunately for me almost all the time I use RF cameras as better focusing EF cameras for my EF glass collection, but yeah, I may give some file love to the rear lens cap of the RF 800/11 that I very occasionally use, now that I know it can work...

I just didn't bother looking seriously into it yet since 800/11 is relatively rare use... I understand the RF-EF converter almost as an unremovable part of the Canon camera now.



May 14, 2026 at 09:04 PM
robstein
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p.1 #17 · Canon Finally Fixes the R System


Do we have to signup for the free fixed caps we should have had from the start or do they send automagically for free? ;-).


May 14, 2026 at 09:46 PM
hatsubai
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p.1 #18 · Canon Finally Fixes the R System


I also ended up doing the filing method to mine. Used a small rat-tail round file. Works great! We'll see how long that lasts until I end up buying them all new caps now that Canon released this, though...


May 14, 2026 at 10:19 PM
EB-1
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p.1 #19 · Canon Finally Fixes the R System


Remember this thread?

https://www.fredmiranda.com/forum/topic/1665308/

EBH



May 14, 2026 at 10:24 PM
garyvot
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p.1 #20 · Canon Finally Fixes the R System


EB-1 wrote:
Remember this thread?

https://www.fredmiranda.com/forum/topic/1665308/

EBH


I painted all my rear lens caps exactly the way Ben did:

https://www.fredmiranda.com/forum/topic/1665308/0&year=2020#15357430

But I used red touch up paint from one of my cars, haha.



May 14, 2026 at 10:28 PM
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