EF & RF Lenses
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EF-S 24mm experience

Hi folks I have an EOS90D and live in the North of England. I bought an EFS 24 mm lens a couple of years ago, mainly for street work. It has however, has little use as my family of lenses has grown. Today, I dusted it off and did some more reading an...

Ramsden by Whiz
  • 4865 Views
  • 28 replies
  • 8 likes

Non-threaded hole on 100-500 lens collar. What is it for?

Does anyone know why there is an extra non-threaded hole on the foot of my 100-500 lens collar?  It would be nice if it was 1/4” 20 threaded so you could use 2 bolts to keep the plate from rotating but it isn’t. But is there some other use for it?  I...

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Trezmo by Apprentice
  • 547 Views
  • 2 replies
  • 0 likes

RF 28-70 F2 Coating Issue

Has anyone else experienced the coating peeling off on the 28-70 f2, this lens is very expensive and I have had the lens less than a year and canon repair is telling me it is not under warranty. I have heard numerous people talk about having the same...

Resolved! Rf 200-800 lens collar annoyances

The lens collar on my RF 200-800 has had a small amount of play in it since day 1. It does what it's supposed to do and does not rotate when tightened, but when you pick it up by the lens foot, you can feel the play. When the collar is loose and able...

Mphoto by Contributor
  • 2390 Views
  • 16 replies
  • 0 likes

RF 70-200 2.8 USM Z autofocus issues

I’m on a r5 mark ii. This is a second rf 70-200 z that had this issue. The autofocus is often jittery, unable to lock onto the subject. The af indicator square is also orange, instead of blue for servo. This is especially noticeable on mainly white o...

Focus Issue RF 100-300 f/2.8 USM

I've had the captioned lens for about 14 months now and it has worked great until about 2 months ago when a focus issue started when the lens is zoomed all the way out to 300mm or 420mm with the 1.4 TC.I purchased the lens brand new from a camera sho...

rgl47 by Contributor
  • 4962 Views
  • 9 replies
  • 0 likes

Why do canon tele lenses have no focus range limiters?

Coming from the Sigma 150-600 EF used with an adapter on my R7 and then switching to the RF 200-800... I really understimated the importance of that feature. I can not count how many shots i missed because the AF rather focused on twigs and grass rig...

RF24-240mm F4-6.3 IS USM – Where’s the love

People talk about or question what is a good lens to go with…… or when I travel what lens should be in my bag. When you are looking for flexibility, range or an easy all day carry the RF24-240mm really doesn’t get the love it deserves. For travel and...

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March411 by Authority
  • 3526 Views
  • 13 replies
  • 17 likes

Replacement for Tripod Collar EF 400mm f/4 DO IS USM

Hi everyone. I'v recently bought an used EF 400mm f/4 DO IS USM (V1) that's missing the tripod collar.Searched the entire internet and could't find the name/specs of the collar replacement or any info about it.How could I ask canon if they still have...

RF 24-105 f/4 L - Dust inside rear element?

Will canon actually clean dust/"things" inside the rear lens element that is absolutely affective image quality.Looking inside my lens i can see a white blob (almost like fibre) towards the outside and a further smear of maybe dust towards the centre...

R6 - 24-105-at-24 - f22.jpg R7 - 24-105-at-24 - f22.jpg
gnartS by Contributor
  • 1904 Views
  • 11 replies
  • 0 likes

An idea for lenses with focus by wire

I realize that this is a community forum but I thought I would talk about the idea I had here first and see what others thought. The pain point is the RF 100-500mm lens.  The focus ring is close to the body.  It is not a light lens so I tend to hold ...

pedz by Rising Star
  • 2164 Views
  • 7 replies
  • 0 likes

Softness issue with Canon 100-400 F/4.5-5.6L IS II USM

I picked up the Canon 100-400 F/4.5-5.6L IS II USM recently and found that many of my images are now soft.I use this lens with the canon 90D body; and I upgraded from the sigma 100-400I shoot aviation, and on many occasions half of the plane is soft ...

Seanac by Contributor
  • 7040 Views
  • 13 replies
  • 0 likes
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