EF & RF Lenses
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EF-M shooters, what are you hoping for from Canon?

The rumors are going around that Canon is going to kill the EOS-M line again (I'm not really putting any base in them, but besides the point). But it does beg the point, on what other people who use these are hoping out of the line.I'm pretty satisfi...

Error 99 and Error CF

My second-hand EOS 20D was working fine, and then it wasn't.  I get the error 99 message, so I take the battery out like the manual says. Then I get the CF error, so I turn off the camera, take that out, put it back in and format it, turn the camera ...

Buddy1 by Apprentice
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  • 6 replies
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EF 70-200mm f/2.8L IS III USM - minimally used

First post to this board.  HELP!!!! I have the EF 70-200 mm f/2/8L IS III USM lens, purchased 7/2019. When I say it is minimally used, probably used not more that 8-10 times.  It has not been mishandled whatsoever!  Something has happened and it is n...

Why are 45mm and 50mm appearing so different?

Hey all. I've got an M50 and have observed something quite strange. I've only got two lenses- the 15-45 kit and a nifty fifty. I've noticed that at full zoom, the 15-45 still has a noticeably wider field of view than my fifty. Why is this? I get that...

AF seems to fall off athe highest focal length?

I'm using a Canon 55-250mm STM lens. I noriced that the autofocus seems to fall off at the highest focal length (250mm). I had to manually adjust the focus to fine tune it.. The autofocus seemed to work fine at around the 135mm length.Is this normal ...

stevet1 by Authority
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  • 1 replies
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What are the best Value Canon lenses?

I've had a few threads on your favourite lenses and canon's best lenses, - but what about the best value lenses?Obviously top of the pile is the 50mm f1.8 - a staple of anyone getting into primes. I personally love the 85mm f1.8 - just got it and it'...

Mason11 by Apprentice
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  • 2 replies
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Lens Question

I currently own a Canon EOS DIGITAL REBEL XS with just a Canon EF-S 18-55mm f/3.5-5.6 IS. It was given as a gift and I don't know much about cameras. I'm looking to buy a lens for doing more zoom shots (mostly nature and wildlife), would the a Canon ...

What is your go to lens?

Excluding 70-200 and 24-70 because they are great and of course we all love them, what is that lens that just works like magic for you or does it's job every time, is underrated, overlooked, forgotten, or you're using in an unusual way, and how are y...

Replacing weather seals on L lenses

Is it possible to purchase the rear rubber weather seal for an L lenses from Canon and replace it myself? How hard is it to unscrew the rear metal mount and put it back without screwing up any alignment? I'm looking at a used EF 24-105mm F/4L IS VI b...

JohnLo by Contributor
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  • 10 replies
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Resolved! EF-R Adapter vs RF native lenses

Hi folks. I have a couple EF lenses I decided to use with my RP (EF16-35mm 1:4L and EF100-400mm). Is there a significant difference in performance or image quaility converting the EF lenses to RF mount? 

KennyRay by Contributor
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  • 4 replies
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Buying Used Lenses

Hello, Full disclosure, I know very little about cameras.  I just purchased a Canon EOS 90 D body only (upgrade from a Canon Rebel XSI).  Per suggestions via discussion boards, I am planning to purchase the Canon EF-S 17-55mm f/2.8 IS USM Lens.  I re...

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