On 17 Dec 2003 at 17:22, Thomas Bantel wrote:
> Ken Durling wrote:
> > In-body IS with varying FL lenses (or zooms anyway) is old hat in video
> > cameras, but that's a different type of IS, isn't it? Like a computer
> > averaging of successive images?
> >
> > Ken
> >
>
> Yes, they use a bigger sensor than needed for the video frame. So they
> can choose the part of the bigger image which best corresponds to the
> last frame. This method is not nearly as effective as optical image
> stabilization like in the EOS IS lenses. E.g. it can't help when some
> or all frames are blurred by camera shake.
>
> Thomas Bantel
Hmm....you make it sound as if neither Canon nor other brands use the
high-end/optical stabilisers in their videocamera's....they *do*.
Both non-exchangeable-lens models, exchangeable-lens models, and of
course including EOS-IS lenses on the high-end Canon videocamera's by
means of an (sadly teleconverting-) adapter.
OTOH, the earlier mentioned argument of dedicated lenses still
applies to this Minolta A1 digicam too....it's zoom, but non-
exchangeable....so the range of parameters is under control (which
indeed might have become a problem when you can mount just any lens;
although it also should only be related to focal length (and that
type of data is already part of the lens/camera communication (see
EXIF-data on EOS digi's)).
Btw, the argument of it being hard to move the (analog?) filmplane:
that's what Contax did in their AX years ago, for AF....;))
Btw2: IS-in-lens means moving a lens-element by changing angles, IS-
in-camera means linear movement of the sensor (X/Y-axis; in contrast
to Z-axis with the Contax AX....;))
Heck, why not combine all 3 axis....:))))
--
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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