EF & RF Lenses
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Focus problem with the 16-35 II on a 5D3

So I bought a Canon EF 16-35mm f/2.8 L USM II on ebay and used it for the first time yesterday.Using live view to preview my shots, I got very strange, blurry previews which do not occur on my other lenses.When I was at 16mm it was fine. At 24mm it w...

Question on a non Canon Lens?

Since there are good number of knowledgeable people here, I would like to ask this question:Has any one heard of Century lens? This is one older probably 60s and 70s tele making manual lens name that I guess has a major company behind the selling nam...

Samsen by Enthusiast
  • 2 replies

Are EF 24mm f/1.4L USM (mark I) lenses fragile?

I've got a Canon EF 24mm f/1.4L USM (orginal version) and for the second time now it has developed a fault that appears to be part of the optical arrangement becomes out of place. The result is a lens that just has mushy quality all round a centre sp...

100-400mmL is not AFing anymore.

100-400 is not AFing anymore.All started abruptly few weeks back.It was an intermittent problem at first. Sometimes back to focusing once I remove the lens from body and reattach or play on / off with AF switch.Camera doesn't seem to be the issue as ...

Samsen by Enthusiast
  • 4 replies

Canon EF-S Lenses

Will the EF-S lenses work on the Canon 5D Mark III? I ask because I have been given conflicting advise.

TDConn by Apprentice
  • 3 replies

Resolved! EF 85mm 1.8(not "L")

Could I have a good review of the 85 1.8 and really how sharp this thing is and how does it compare to the L version in terms of sharpness and build quality? Thanks.

BKA by Contributor
  • 3 replies

What does AA mean on a lens item code?

I'm looking for a used version of this lens:http://www.usa.canon.com/cusa/consumer/products/cameras/ef_lens_lineup/ef_70_300mm_f_4_5_6_is_usm#Overview and I'm finding many with the item code listed as 0345B002, 0345B005AAI've seen a photo of the box ...

Brad by Enthusiast
  • 1 replies
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11/22/2022: New firmware available for EOS R3, EOS R7 and EOS R10
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09/19/2022: New firmware version is available for EOS C70
08/31/2022: New firmware version 1.1.1 is available for RF 70-200mm L IS USM
08/09/2022: New firmware version 1.2.0 is available for CR-N 300
08/09/2022: New firmware version 1.2.0 is available for CR-N 500
07/28/2022: New firmware version 1.2.1 is available for EOS-R3
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07/21/2022: New firmware version 1.6.0 is available for EOS-R6
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07/21/2022: New firmware version 1.1.0 is available for EOS-R10
07/14/2022: New firmware version 1.0.1 is available for CR-X300
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