On 5 Sep 2006 at 13:03, Stefan Gerris wrote:

> > Not so with the 70-300 DO IS.  It has two settings,
> > one that stabilizes in both directions and one that
> > stabilizes in only one direction.    The latter is
> > recommended for targets that move horizontally.
> > Tripods are ok.
> 
> What do you mean exactly with "Tripods are ok"?
> 
> As Willem-Jan mentioned before, the more advanced IS sytems recognise
> automagically whether the lens is mounted on a tripod or not. The setting
> of the switch has no impact on this (except in the OFF position ;-). The
> possibilities are: 0 (off), 1 (panning, IS in 1 dimension), 2 (IS in 2
> dimensions).
> 
> When mounted on a tripod (or otherwise fixed), I thought the lens would
> detect this (lack of movement all together) and just switch of IS all
> together. I'm not sure, but on my 70-200 L-IS, it surely sounds that way.
> Or rather: I here nothing at all when the lens is mounted ;-). The very
> mute humming of the gyros is just not there.

On earlier/consumer range IS-systems, there was a warning against 
using IS on a tripod....probably not smart enough to detect the 
difference, to either switch-off or use the tripod-algorithm.
I doubt though that this applies to any current/modern IS-system 
today, probably even regardless of brand/manufacturer....


--                 
Bye,

Willem-Jan Markerink

      The desire to understand 
is sometimes far less intelligent than
     the inability to understand

<[EMAIL PROTECTED]>
[note: 'a-one' & 'en-el'!]

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