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Question: Have you ever heard of the Canon Ultrasonic lenses!?
Ok, so I was looking at a camera on ebay (Canon XT) and I showed a lens on the camera which model was the Canon EF Ultrasonic 35-105 mm lens!. I don't think I've ever heard of the Ultrasonic line before!. The lens isn't even on the Canon website!. Have you heard of this before!? If you have is it a good lens!?Www@QuestionHome@Com
Best Answer - Chosen by Asker:
Yes, it's usually written as USM which means Ultrasonic Motor!. It helps make the auto focusing faster, more accurate, and quieter!.Www@QuestionHome@Com
ultrasonic, i guess it might have to do with the blur!. many crappy cameras suck because of this!. never heard of that!. Www@QuestionHome@Com
Yeah, Canon marks them USM!.
They are generally considered quiet and fast!.Www@QuestionHome@Com
noWww@QuestionHome@Com
no
srry i havent heard of that!Www@QuestionHome@Com
no i'm trying to find out too!.Www@QuestionHome@Com