Canon EF 50-200mm f3.5-4.5 L performance

I am looking for information on the EF 50-200mm f3.5-4.5 L zoom. Does it have internal focus, or does the lens barrel rotate? Type of focusing motor? Does it have the auto/manual focus switch on the lens barrel? I would also like know the opinions of users as to the preformance, contrast, usability etc...

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Any responses will be greatly appreciated.

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Thank you,

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Steve Allen

Well, first, they haven't been made for many years now. They do

show up used form time to time.

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It has an AFD (arc form drive) motor, not USM, so it isn't silent

and it doesn't have full time manual focus. It does have an MF/AF

switch on the barrel like all the older lenses. It takes 58mm filters.

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It's reported to be a good performer, better than the non-L consumer

lenses of similar focal length. The closest parallel in current

lenses is probably the 100-300/5.6L.

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That's about all the info I have on it.