EF & RF Lenses
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Resolved! mold or mildew in lens

I own a Canon 400mm fixed lens, which has developed some mold or mildew.   It is not obvious when lookingat images (perhaps it would be if magnified sufficiently), but it is bothersome.   Is there any way to fix or cleanthis without sending it back t...

mitchmcc by Enthusiast
  • 7675 Views
  • 9 replies
  • 0 likes

24-105 Mark II vs 24-70 F2.8L Mark I?

Hello Canon Forum People here my post to ask an opinion about something that hasn't been mentioned in any review, forum or discussion.  I am a happy owner of a 24-70 F2.8 (mark I) since many years. has been a gr8 companion in combination with the 70-...

marco79 by Apprentice
  • 12068 Views
  • 15 replies
  • 0 likes

Best EF L lense as workhorse for 80d

Hi,I'm a filmmaker wanting to do this full-time, weddings, commercial, travel films, content creation etc.I currently own a 80d, and will most probably upgrade to full frame in a year or two. But before that I want to invest in a dynamic high end len...

Resolved! Lenses

What is the difference between EF and EF-S lenses if both have the same specs. 

yaa124 by Apprentice
  • 3372 Views
  • 4 replies
  • 0 likes

70-200 f/2.8L II + 5DSR AF consistency problem

Folks, need an advice...My 70-200 isn't focusing consistently @ 200mm (I mostly shoot at this focal length, don't care much about the wide end). Tried several times to AFMA with FoCal - the software returns "poor fit" because the results are so incon...

docusync by Enthusiast
  • 7146 Views
  • 12 replies
  • 0 likes

Resolved! EF-S 15-18mm Focusing Ring not working on Manual Mode

Hi, I just acquired my unit and sadly, I bumped the front of the 18-55mm lens to my desk.. It's not that hard so I didn't mind it much but when I tested to use my camera which is Canon 800d the manual focus wasn't working anymore... I tried steering ...

Bad Coma? Or Focus issue?

Hello all/ anybody who can help! I'm having a problem with my 70-200 F2.8L IS II. I've rented and used many copies of this lens over the years and have never had an issue with it. Granted, the people over at Lens Rentals always tests and recalibrates...

Bad Coma Issues.
Chip_Orm by Contributor
  • 8625 Views
  • 20 replies
  • 0 likes

camera - adapter - lens connection order ??

My zoom is coming in the mail tomorrow.  I will be using it with my EOS M100 and an adapter.What is recommended: 1) adapter on camera and the add lens or2) adapter on lens and then camera. (1) seems to put the most torque on the camera (adapter the l...

Resolved! Is Canon EF 75-300mm f/4-5.6 III too heavy for the EOS M100 ?

I am thinking of buying this inexpensive used zoom lens and use with my adapter.There is no tripod mount on this lens. Is the lens to heavy for me to use the camera tripod mount ? Has anyone tried any of the EF Zooms on an M100 ? rapid feedback appre...

mangurian by Rising Star
  • 7872 Views
  • 12 replies
  • 0 likes

Lense hood for 18mm-55mm not fitting right

I am an extreme newby to "real" cameras.  I'm stepping up from a point and shoot and recently purchased a Canon EOS T6 Rebel kit with the 18/55mm and the 75/300mm lenses.  I went to my local camera shop trying to find a lense hood for it, but I could...

AllenP by Contributor
  • 8057 Views
  • 8 replies
  • 0 likes

Filter Storage

I recently purchased some Hoya filters and they came with a storage bag, but the lenses themselves came stored in plastic bags.  My wife's filters for her old camera came in really nice storage cases for each lense.  Can you buy after-market cases li...

AllenP by Contributor
  • 3375 Views
  • 4 replies
  • 0 likes

Wide Angle - Discussion / Advice (for canon efs 10-18mm lens)

Hi all,  I have a canon t5i. I purchased the canon EFS 10-18mm wide angle lens and have been very pleased with it. I am however looking for an even wider angle. I understand this camera not being full frame will limit the field of view. So I am looki...

Mike41 by Apprentice
  • 6373 Views
  • 10 replies
  • 0 likes

$650 for Canon EF 35mm f1.4 L . Is it a good deal?

I found this deal locally and will be able to test before purchase. Is $650  a good deal for this lens? There is a website online saying you can check when Canon lens was manufacture base on serial number/date code. Is it accurate or it's just a myth...

35mm 1.4 Lens focus issue

Hi everyone,So the focus ring on my 35mm 1.4 lens works, but it doesn't go all the way to one of the sides. It goes to the end on the left, but when turning it to the right, it stops just after 0.5m and it won't go all the way to "infinity". It doesn...

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