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Octagonal Bokeh Question

Hi, I'm curious about something I noticed today in one of my photos. Here's a bit of background info: The attached photos (one is cropped to show a close up of bokeh) were taken with a Canon 100mmL lens (Rebel T3i camera). The settings for the water ...

Croppedbokeh.JPG Croppedbokeh.JPG Sunshine.JPG

Canon EF 50mm f/1.2 L USM Focusing Issues

I've had my 50mm for about a year now and I absolutely love it. However, I noticed that there are instances where I don'tuse it for a while and it starts to "stick." By that I mean, when shooting with either my 80D or M50, it doesn't alwaysfocus on w...

canon 17-55 noisy image stabilization

I just purchased a canon 17-55mm lens and the first time I used it I noticed a loud noise coming from the lens when I have the  image stabilization turned on.  It sounds like a casette tape rewinding for about 2 seconds then a sort of radio static ty...

Justin by Enthusiast
  • 5194 Views
  • 9 replies
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Canon 70-200 f/2.8L IS II not sharp at 200mm

I've been using my Canon 70-200 f/2.8L IS II for years now and it's always been my favorite lens for sports.  In my last couple outings, I noticed that I was getting a lot of blurry shots and I now realize that they are all my shots taken at full 200...

garymui by Contributor
  • 13057 Views
  • 39 replies
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Lens compatibility

HI Folks forgive me if this sounds like stupid question  I have a Canon Rebel T6i and I am wonder if it is compatible with the following lens.Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens for Canon EF  If not what would you guys recommend for s...

ganont6i by Apprentice
  • 1797 Views
  • 3 replies
  • 0 likes

Resolved! Problem with two different Canon 85mm f/1.8 Lenses

A while back I was having intermittent problems just on a Canon 85mm f/1.8 USM lens. All my other lenses work fine. Sporadically I would get, "Communications between the camera and lens is faulty. Clean the contacts". It seemed humidity played a part...

IS on or off?

I was at a road course event this weekend. Was using a Canon 1DX with a Canon 400L 2.8, first generation. Thing is like a boat anchor so I was using my tripod and my Wimberley Gimbal head. I have a **bleep** near 50% fail to focus rate when I was usi...

Lens adapter Sigma to Canon

Hi all, I have a Canon T3i and recently bought lens Sigma 24-135mm f/2.8-4.5, but I just realized that it doesn't fit in my camera.I would like to know if I can easily find an adapter and which one could be. I found one in Amazon, but I'm not sure if...

jayne-lp by Apprentice
  • 17415 Views
  • 17 replies
  • 1 likes

Resolved! Image Stabilization On/OFF when hiking ?

Hi all,When resting my DSLR attached with IS lens in the backpack / toploader for hiking, should I need to turn OFF lens IS or keep it ON ?Thank you for your response.

tmc784 by Enthusiast
  • 3192 Views
  • 5 replies
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Resolved! 650 Lens work for a T3i

Now i wish i still had all my old canon lens ??  Is there any thing special one needs to know when buying lens for a digital camera ???  I know canon film lens but my T3i is new to me ??

monradon by Contributor
  • 2665 Views
  • 5 replies
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Resolved! Lens not communicating with camera

My new 6D Mark 2 gives me an error message when I try to use my EF 100-400 1.4-5.6L IS II USM lens. "clean the lens contacts" The contacts are clean and the camera is new. The lens works fine on my EOS rebel, all other lenses work with my new camera....

Harry3 by Apprentice
  • 10271 Views
  • 5 replies
  • 0 likes

Canon 17-40mm f4l Can't attach in camera

Hello! I have a Canon 7D and used the Canon Lens 17-40mm f4L every day. This lens never fell or was hit. There is no visible why the lens has stopped snapping into the camera. It's like there's something blocking the fit. I can use other lenses in 7D...

lelmota by Apprentice
  • 1626 Views
  • 4 replies
  • 0 likes
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