Op Wed, 27 Sep 2006 16:07:19 +0200 schreef Adam Maas <[EMAIL PROTECTED]>:

> Lucas Rijnders wrote:

>> Anything on backward/forward compatibility of the USM and the old AF
>> system? Did your rep explain the AF/MF switch on the lenses?

> The AF/MF switch on the lens will work just like it does on Canon USM or
> Nikon AF-S lenses. It's not exactly unique. Does exactly what it looks
> like it will do (Allows you to turn off AF on the lens).

I am not familiar with Canon or Nikon lenses. Could you explain what the  
point is, given that you can turn off AF in the body, and that USM (at  
least the Canon variant) allows manual focus in AF mode?

Genuinly interested,
-- 
Regards, Lucas


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