I take it IS is a top of the line feature then that is gonna really cost
some money?
Also is USM a high end feature on only the more expensive Canon lenses?
Kuma
p.s. gonna try to stop by my local camera shop and pick up some info. I've
spent a little time visiting web sites but the info wasn't that great
unfortunately.
> > This brings up the question, what does IS and USM stand for?
> >
>
> IS stands for Image Stabilizing which Canon has a lion's share in terms of
> how many lenses in their line up with this technology, in comparison Nikon
> has but only one high end zoom lens with this technology and it
> took almost
> a year after announcing the lens is available before the average consumer
> was able to actually buy one recently. No other brands of SLR (or medium
> format camera) has this technology.
>
> USM stands for Ultra Sonic Motor, it is a technology that
> combines fast and
> quiet autofocusing mechanism, Nikon has theirs equivalent also, but again
> only in their very high end lenses.
>
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