Hi all,
A friend of mine is interested in buying a second hand Canon 400/2.8L, as
the new 400/2.8L IS is just too expensive for him. One store in Holland
offers this lens in two types:
USM
USM II
Can anyone tell me:
- What is the differnce in focus speed
- How to identify one type from the other
- What the difference in price should be
I tried to find some info on this on the net, but could not find what I was
looking for. So any help is much appreciated.
Best regards,
Iwan Bogels
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