Canon Community

stevefoobar · 12-04-2022

I recently started having trouble with my cherished 17-40mm 1:4 L USM lens. It won't properly auto-focus. It hunts and sometimes gets it right but usually doesn't. I can still manually focus. All my other lenses still auto-focus fine on my EOS 5D Mar...

stevefoobar · 01-18-2020

Hi Everyone, For some reason, I'm having difficulty getting straight answers on the net about finding a list of image stablized lenses that would work with the Canon EOS 5D Mark II which has a full-frame sensor. I would like to get a list of both Can...

stevefoobar · 10-27-2022

Thanks for the input.

stevefoobar · 10-26-2022

I thought I was having exactly the same problem initially, however, after trying the lens on my old 20D body the lens had exactly the same problem as it does on my 5D Mark II camera body. It appears to be auto-focusing (I hear the motor trying and th...

stevefoobar · 01-20-2020

Thanks. This makes sense too.

stevefoobar · 01-20-2020

Thanks for the advice. That all makes sense. That's a great image and a great use of IS!

stevefoobar · 01-20-2020

That's really good to know. That obviously defeats the purpose. I have seen lenses claim the IS provides 3 stops of improvement in stability. Is that typical? Do you have any experience (or have read reports) of at least major brands like Tokina, Tam...

Canon Community

User Statistics

User Activity

Canon EF Zoom 17-40mm Auto-focus Problem--Canon won't service?

Image Stabilized Lenses for the 5D Mark II Full-Frame?

Re: EF 17-40mm f/4 L USM Autofocus Issue

Re: EF 17-40mm f/4 L USM Autofocus Issue

Re: Image Stabilized Lenses for the 5D Mark II Full-Frame?

Re: Image Stabilized Lenses for the 5D Mark II Full-Frame?

Re: Image Stabilized Lenses for the 5D Mark II Full-Frame?