Baz,
I hadn't thought of shifting the sensor. Excellent idea!! You're
right that the AS might have to be disengaged, probably to many
variables to keep the sensor moving to eliminate camera shake with
the sensor angled.
Angled? I don't think the sensor is ever angled, is it?
My understanding is that the sensor is held strictly normal (90 degrees) to lens axis in all present implementations of Anti shake. For shifts, not tilts, normal is what is needed.
I'm don't think using the review lcd will work. First, not all
architecture shots are done using a tripod. Come to NY and see how
many people are taking pictures of tall buildings or bridges, hand
held. Second, an LCD in bright day light can often be useless. No,
a live preview is needed and preferably one with grid-lines on the
focusing screen in an evf protected from the sun glare.
You are quite right that viewfinder indication of shifted framing would be preferable to review on the LCD. But, if it's a choice between no viewfinder indication, or NO SHIFT AT ALL, I'll take the shift without viewfinder indication, thanks.
After all....A useful facility is still useful, even if the perfect implementation never happens!
I know the digicam world is moving towards mega-zoom with smaller
sensors but a t/s sensor on an A2 body would be glorious. A guy
can dream, can't he?
A sensor that shifts (or
can be shifted ) in a plane normal to the lens axis has four uses that I can see...
1) Anti shake -- [Got it now. Thanks very much.]
2) Anti dust -- [Got it now in more than one make of camera. Thanks very much.]
3) Re-positionable imaging area providing lens shift equivalent -- [Not got yet. How about it?]
And the fourth?
Well, a re-positionable sensor would also provide a means to take still life type pictures with the sensor in more than one position, it being moved between shots whilst the camera is held still. This would provide images larger, and with more pixels, than the sensor can provide in one hit.
Such multiple images would be ideal for stitching, since they would not need so much correction as conventional stitch shots where the whole camera and lens combination is moved.
It happens that this idea is not original.
Sinar provided this option with one of their Large Format digital solutions about 5 years back. A standard MF back was pushed into each corner of the 5x4 frame, in sequence one after the other. Sinar software stitched them together afterwards.
See "4 shot Still Life Mode" on this page from Sinar website....
http://www.sinarbron.com/sinar/digital/sinarback2.php
Unfortunately, if that blue type is meant to indicate a link, it isn't working. ;-(
[Hmmmm ...Sinar's website is a bit lacking in pictures, considering their products are supposed to be used for taking them!!]
Anyway, and like I say..............
I think there is a lot more you can do with an Anti Shake style sensor than jiggle it about to get the dust off !!
To quote Mark.....
A guy can dream, can't he?
--
Regards,
Baz