For those who don't frequent DPR, this is an interesting video of the
K100D's SR ina action:

<http://pixinfo.com/img/Pentax/K100D/a/CCD_shift.mpg >

Dave

On 12/13/06, Digital Image Studio <[EMAIL PROTECTED]> wrote:
> On 13/12/06, DagT <[EMAIL PROTECTED]> wrote:
> > > Fra: "Digital Image Studio" <[EMAIL PROTECTED]>
> > >
> > > On 12/12/06, DagT <[EMAIL PROTECTED]> wrote:
> > >
> > > > If you have three sensors, and they have, the difference between two 
> > > > sensors with the same orientation but positioned on opposite sides of 
> > > > the frame they will be able to measure rotation.  It is not very clear 
> > > > from the document, but at least it is possible and I know this has been 
> > > > mentioned other places as well.
> > >
> > > It actually says:
> > >
> > > "Based on a free-floating sensor design, PENTAX SR is superior to
> > > other sensor-moving systems because it uses no guide rails, allowing
> > > the sensor to oscillate in three directions?horizontally, vertically,
> > > and rotationally."
> > >
> > > But in this later document which includes references to the K10D:
> > >
> > > http://www.pentaxslr.com/files/scms_docs//PENTAX_SR_Description_091506.pdf
> > >
> > > "Based on a free-floating sensor design, PENTAX SR is superior to
> > > other sensor-moving systems because it uses no guide rails, allowing
> > > the sensor to oscillate in three directions?horizontally, vertically,
> > > and diagonally."
> > >
> > > So it's clear as mud.
> >
> > Have you tried to explain rotation as a third dimension to marketing people 
> > .-)
> >
> > That may explain some of the confusion. To me it makes more sense than the 
> > third direction is a rotation than just a diagonal translation. The latter 
> > would be possible with the right design of guide rails, but not the 
> > rotation.
>
> I suspect that rotation and any other combination of parallel or
> diagonal movement would be possible using the combination of four
> motors that they have. The motors are the guide rails :-)

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