Posts
If an f6 lens with a 2x doubler won't autofocus why will a lens stopped to f22 still focus?
I do not understand ? If a telephoto zoom lens rated f4-6.3 wont autofocus if connected to a camera with a 2x converter why a lens stopped down to f22 will autofocus?
Resolved! How can I spot counterfeit canon lenses on Ebay?
I've purchased an excellent condition Canon F1N off Ebay; and have bought several lenses for it. I think one lens may be a counterfeit (the lens does not have threads on it which will accept a 55mm filter). Where do I go to verify the authenicity of ...
Why won't canon lens fully work in autofocus.?
Canon lens 28-105mm attached to 5dmarkiii body will not always work in auto focus mode. I think I can occasionally get it to work in alfocus but even in manual the lens occasionally won't register focused objects. Do I have a problem with the lens or...
Resolved! canon lenses
hi there!i need pro advise on comparing 2 lenses as follow:ef-s 10-18mm f.4.5 IS STM VS ef-s 10-22mm f3.5-4.5 USMsharpness of corners on 10-22outdoor clearance seems equal 10-18 has IS but much cheaper10-22 has metal mount and 10-18 plasticetc...but ...
what is the best and fastest lense for indoor basketball. low light- using a canon 70D
I shoot high school basketball games in small low lit gyms. I use the Canon D70 with the Canon EF-S 18-200mm f/3.5-5.6 IS. This takes good pictures but I want sharper picture quality. I need a fast lense!! I have been looking at the Canon 70-200 f...
Lens suggestions for the 70D
Hey photo people! I'm looking into buying the Canon 70D but I can't decide on what lens to purchase with the camera or if I should stick with the lens that comes in the kit. This is my first "fancy" camera purchase so it's a little challenging for me...
Why is there speckling on the underside of my lens glass?
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....
Is there a way to control the aperture of an EOS lens when it is not connected to a camera body?
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...
Resolved! EOS Lens Registration Tool
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...
Cannon 60D portrait lens recommendations, please.
I am a new owner of a Cannon 60D w/ a kit 18-135 lens. I would apprecaite recommendations for a portrait lens. Thanks!
what are the major risks buying used lenses ?
i just bought my first dslr, and i was wondering what are the major risks buying used lenses ?
UV Filters, Polarized Filters
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.
