My lens has developed speckling on the underside of the front glass; it resembles dust in pictures, especially when the aperture is narrowed, but is inside the lens and doesnt appear to shift. I've had it for only 3 years and always used a UV filter....
I'd like to use a Canon EOS lens with an astronomical CCD camera to do some non-astronomical imaging. This project requires the ability to change the lens aperture to deepen the field of view. I've heard that the aperture can be set by connecting t...
What is the EOS Lens Registration Tool? I suspect it was part of a recent upgrade to my Canon software. When activated, it will not launch and said my XSi camera is not recognized. The EOS Utility does recognize the camera. Is it for a full frame o...
I am a new owner of a Cannon 60D w/ a kit 18-135 lens. I would apprecaite recommendations for a portrait lens. Thanks!
i just bought my first dslr, and i was wondering what are the major risks buying used lenses ?
Does anyone have some good reference/reading material that you can share with me, I would like to experiement with filters. Ive googled some stuff but did not find strong material. Any help on this would be greatly appreciated.
Hi. From what I see on other forums, the push-pull design of the 100-400L v1 is popular. I know I prefer it to twist zoom. If it is even possible, I wonder if there is any profit for Canon to fabricate a conversion kit to be installed by a Canon ser...
I have a 400mm L IS and today it started to make a much louder noise during the image stabelization. Is this a sign that it is not working porperly or in need of repair. Has anyone else experienced this before? ThanksSteve
I use a 24-70 f 2.8 and the 24-105 f4 lenses but the 24-105 has gotten extremely loose over time.Is it worth repairing or should I just replace it? I love this lens because of its range and weight.
Hi everyone, I just bought a used 50mm 1.8 from as I wanted to have low depth of field for music videos. I'm having trouble, though, in that the camera is CONSTANTLY refocusing when in movie mode, to the point that autofocus is basically useless. Is ...
Hi, I dropped my lens from half open bag into trunk of the car,there is no physical exterior damage, it will focus but makes a cluncking sound and picture through view finder jumps up before focusing, photos still coming out clear and sharp,not sure ...
Team, I recently purchased a Sigma 17-70mm F2.8-4 DC Macro and would like to hear from you guys abotu other lenses out there that are excpetional as well. So far i have nothing but good reviews for this lens. Im new to the Sigma brand. thanks,
Hi there, please can I get your help.I have the Tilt Shift 90mm which I use for Product and Still Life photography in a studio. I love the sharpness and clarity of the lens, and so far I haven't really used the tilt function that often.A few weeks ba...
Hello Everyone… I have 2 Canon Cameras EOS 40 D & EOS 7DCurrently have the following lensesCanon EF 28-135mm IS USM (2)Canon EF 70-300mm IS USMCanon EF 100mm IS USM L Series MacroCanon EFS 18-55mm (El Cheapo) I am in the market for a wider angle fixe...
The original shipment from Canon came just pre Christmas...don't seem to be getting any more through, anyone know when they might be more available? thanks, George
