Lenses Ultrasonic

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I have a Canon EOS Rebel S with a EF 35-80mm lens,I was thinking of getting the 70-210 ultrasonic lens. Q:How good is the Ultrasonic lenses?

-- Trevor Lum (tllum@attcanada.ca), September 26, 2000

Answers

My answer refers to Ring USM motors and not MM USM (except the EF 50/1.4), and excluding those that uses Electronic FTM (The non IS super teles).

Less energy consumption Faster AF Silent Full Time Manual

-- Alex Yap (hashigou@yahoo.com), September 27, 2000.


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