Question

 What does usm mean on a canon lens?

Answer Obviously depends on quality of the pictures, but you should get about 300-500.
http://wiki.answers.com/Q/What_does_usm_mean_on_a_canon_lens

Top Q&A For: What does usm mean on a canon lens

Canon 400D you would like to buy a canon 300mm f 4 LIS lens canon1.4 x extender you would like to know if you could use this lens for your camera and its cost?

Once you have a digital camera and a compatible memory chip, you can take almost countless pictures for no additional expense. As the memory chip fills up, you can upload it to a computer and then ... Read More »
http://wiki.answers.com/Q/Canon_400D_you_would_like_to_buy_a_canon_300mm_f_4_LIS_lens_c...

You are thinking about buying a Canon EF 200mm f2.8L II aunto focus telephoto lens and am wondering if it will fit on both your canon rebel k2 35mm and also your digital canon rebel XSi?

Short answer,"yes."The Canon EF 200mmm lens is designed to fit a "full-frame" Canon EOS camera - film or digital. It will also fit all Canon DSLR's that have the smaller APS-size sensor, including ... Read More »
http://wiki.answers.com/Q/You_are_thinking_about_buying_a_Canon_EF_200mm_f2.8L_II_aunto...

Have a canon powershotsx150 and the lens wont go back in and lens error comes on screen then camera well powers off?

If I bring my SLR - a Canon Rebel XTi with stock lens - into the probably steamy bathroom while I shower could it damage my camera or lens?

im the one that asked the question. what i didn't mention is that i have a digital camera with no memory card (or slot) i have a USB cable and i'd like to konw if there is a product that i can plug... Read More »
http://wiki.answers.com/Q/If_I_bring_my_SLR_-_a_Canon_Rebel_XTi_with_stock_lens_-_into_...


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