Canon EF and RF Lenses Forum

Viltrox Stops Selling Canon Lenses

I was interested to see A POST in DPREVIEW to the effect that Canon had told Viltrox to stop selling Canon RF mount lenses. I went to the lens company's website HERE and there is no listing for Canon RF lenses and, in fact, none for the EF-M mount...

Canon 100-400 EF 4.5/5.6 not focusing (auto or manual)

I had to tighten a screw on the lens mount of my 100-400 lens because it was loose and not coupling completely with the camera. After tightening it (and now getting a good fit with the camera), the lens is not focusing, either in autofocus or manual ...

18-135 usm lens Focus Motor Broken

Looks like Focus motor is brokenany cheaper way to repair itcanon support page is broken to setup any repair

Resolved! Need info in a lens previously suggested

I had posted a while back and someone suggested a lens that would be good for general use as baseball games. Couldn't find the post. I checked a file that I keep with printouts of suggestions, etc., but I didn't find anything. I recall the lens was X...

Resolved! Repair Status "Suspended"

I have a lens in the service center under the extended warranty. I checked the status this morning and it is marked as "suspended".Does anyone know what that means? Thanks for any info.

Resolved! RF 100-500mm Manual Focusing with AF Engaged

When using the RF 100-500mm lens (attached to a R5), and the lens switch is in the AF position, can you also use the manual focusing ring to override the auto-focusing? The focusing ring does have any effect when the lens is switched to AF. When us...

300 mm 2.8 usm Optical Difference Between Lens from 1999 and Today

Hi everyone, I own an old 300 mm 2.8 usm first generation, 1999 I guess.I like to know if any big optical difference with the IS newer generation?

Resolved! Remote shooting focus failure with EF 100mm f2.8 Macro USM lens

I take photographs of objects by shooting with a Canon 6D through a newer pc laptop via Canon Utilities version 3. This setup worked fine until recently. Now when I use the Canon EF 100mm f2.8 Macro USM lens, I get the message “focus failure” and the...

Resolved! Need a suggestion for a macro lens to photograph my jewelry

Hey there! I make jewelry and am looking for a true macro lens for my Canon T6. I've read so many different blogs, posts and I'm more confused than ever. I don't have thousands to spend and a new camera isn't an option at the moment. I've been gettin...

Parameters of the UltraSonic Motor of lens

Hi everyone, I'm a researcher from the university. In my study, we ued two SLR lens with Ultrasonic Motor for imaging (f=50/1.4 and f=100/2.8).Recently one reviewer of our paper ask us to compare our new technique with the focusing speed of the USM...

Does RF 100-500 shut down IS when it's mounted on a tripod?

Hi everybody!I switched recently from Canon EF 70-300 IS USM II to RF 100-500 L and noticed that when mounted on a tripod my 100-500 unit (looks like) shuts down IS. Just want to know... is it something wrong with my unit or is it just a normal behav...

Resolved! EF Lens Compatibility with EOS Rebel T6i

I have Rebel T6i and I want to buy Canon EF 70-200mm f/2.8L IS III USM Lens... Can I used it on my camera?

Resolved! 1.4x iii release pin not always engaging

My 1.4x iii release/anti-rotation pin doesn't aways engage and I have to move the lever back and forth a few times on occasion. Not wanting my attached lens/body to fall off, I aways try to check. I would like to send this in for service, but it loo...

Canon 50mm 1.8 II EF Lens Dust Caps

Can someone point me to the correct dust caps for this model lens? Unable to find on the Canon site.

Resolved! Having trouble registering RF100-500mm F4.5-7.1 L IS USM

I cannot register my RF100-500mm F4.5-7.1 L IS USM as it doesn't come up as I type it in.

Canon Community

Posts

Viltrox Stops Selling Canon Lenses

Canon 100-400 EF 4.5/5.6 not focusing (auto or manual)

18-135 usm lens Focus Motor Broken

Resolved! Need info in a lens previously suggested

Resolved! Repair Status "Suspended"

Resolved! RF 100-500mm Manual Focusing with AF Engaged

300 mm 2.8 usm Optical Difference Between Lens from 1999 and Today

Resolved! Remote shooting focus failure with EF 100mm f2.8 Macro USM lens

Resolved! Need a suggestion for a macro lens to photograph my jewelry

Parameters of the UltraSonic Motor of lens

Does RF 100-500 shut down IS when it's mounted on a tripod?

Resolved! EF Lens Compatibility with EOS Rebel T6i

Resolved! 1.4x iii release pin not always engaging

Canon 50mm 1.8 II EF Lens Dust Caps

Resolved! Having trouble registering RF100-500mm F4.5-7.1 L IS USM

Real life IQ with the RF 14-35 F4L

Additions to the NEW RF STM lens lineup

Big Savings - Canon RF 100-500mm f/4.5-7.1 L IS US...

EOS M50 -doesn't take pictures with EF-M 15-45mm l...

EF 24-70 f2.8L USM Failure

Fix for Canon 100mm 2.8L macro lens problem\bug wi...

Using the EF 85mm 1:1.8, how to improve focus

EF 24-105mm Repair estimate for new aperture cable

Rf 200-800 lens collar annoyances