EF & RF Lenses
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Resolved! Working distance of EF 100mm f/2.8L

I would greatly appreciate it if someone could tell me the working distance to the front of the lens of the 'L' version of the Canon 100mm EF macro lens, i.e. 100mm f/2.8L when at maximum magnification of 1:1.  Unfortunately, various on-line reviews ...

Canon EF 100-400 IS damaged screw head

I recently left my Canon EF 100-400mm IS lens to the only authorized service center in the UAE, for cleaning and fungus removal. However, upon collecting the lens, I noticed that the front element remained dirty, with visible fungus spots still prese...

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Resolved! How to check dust in lens

Hi guysI'm going to check out a secondhand lens and realise I don't know how to check for dust. Is it microscopic or plain to see. Plus I want to keep an eye on my current 3 lenses. As ever - your help is appreciatedRamsden

Ramsden by Contributor
  • 380 Views
  • 7 replies
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Is Squeaky AF Noise Normal for Canon RF 24-105mm f/4?

Hi,I recently bought the Canon RF 24-105mm f/4 lens as a refurbished item from Canon's website, and I use it with my Canon R8. In video mode, autofocus is quick, accurate, and completely silent, even when I adjust the Movie Servo AF Speed to the fast...

Grep by Contributor
  • 449 Views
  • 7 replies
  • 0 likes

EF 100-400 Auto Focus does not work.

I have an EF 100-400mm f/4.5-5.6L IS USM.  The Auto Focus does not work.  When I turn the camera on the letters MF flashes in the window on the back.  The lens is set to AutoFocus and when I change it to ONE SHOOT or AL SERVO it flashes a message tha...

ccobb66 by Apprentice
  • 2769 Views
  • 7 replies
  • 0 likes

EOS R50 lens recommendations for church photography

I’ve searched the forum to see if I could find an answer for my question but wasn’t able to find one. I just bought my R50, upgrading from phone. The kit lens is 18mm - 45mm. Normally I would take pictures of family members at home, on vacation, you ...

Resolved! RF50mm f1.8 - focus shift on higher f-stops?

I've tried to test this lens with and without an UV filter, to see if there would be any degradation in IQ. Turned out there was none. But, I've found a much bigger problem.Apparently my lens shifts focus at higher f-stops.Both images are taken at f/...

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maboleth by Contributor
  • 634 Views
  • 10 replies
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Lens Recommendations for Beginners? (EOS Rebel T5)

Hi! I am looking to upgrade my kit lenses that I got with my Canon EOS Rebel T5 (18-55mm and 75-300mm zoom lens). I recently purchased the 50mm f/1.8 and want to build up my collection to continue practicing. I've heard good things about the 24 mm f/...

mmonss by Apprentice
  • 339 Views
  • 4 replies
  • 0 likes
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