--- Jansen <[EMAIL PROTECTED]> wrote:
> I'm sorry if this question has been asked before in this mailing
> list. Since
> I don't have any IS lenses, I'm curious whether an IS lens would be
> slower
> than a similar lens without it? E.g., would the EF 70-200/2.8 IS L be
> slower
> than the old Canon 70-200/2.8 L because the IS technology adds more
> time
> when focusing or taking the picture? Bare with me please :-)
I believe the IS lenses have more glass then the non-IS lenses.
Nevertheless, in most cases they probably still move the same amount of
glass as the IS-group is fixed. So in that regard there is probably no
difference in AF speed. But also remember that the motor, algorithm
that the camera uses, etc have an influence on AF speed.
Robert
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