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**[email protected]**

On Fri, 11 Jan 2008 11:20:27 -0800 (PST), wrote:

On Jan 11, 10:35 am, "Larry L" wrote:

Using a trackball type "mouse" and being as careful as I can I get distinct
jumps and can not, ever, find a postion between those jumps.

What Sandy is proposing would still have jumps, although why stop at
40 pics if all you have to do is click a mouse? ;-)

If you look at some of the other flies, there are pretty big exposure
jumps between some successive images, as well as focusing changes.
That wouldn't happen with interpolation.

E.g, choose "Peter Koga", "Steelhead 1", and make the fly face
directly away from you. Then rotate it counter clockwise (as viewed
from above) and watch the next 4-5 images.

Jon.

I can't say I _know_ how the person did it, but I can say in the
rotation, the "vice" appears to raise and lower very slightly and in a
smooth, linear fashion...oh, say, about what a single thread of a
threaded system might produce/cause. If I wanted to attempt to
duplicate the "film," I'd simply tack a pointer perpendicular to a fly
holder (the tip of which is seen in the "film") on a threaded rod,
attach a compass rose type of card with points marked at whatever number
of frames I wished to expose (IOW, if I wanted 36 exposures for a roll
of 35, I'd mark every 10 degrees) and rotate to each point, take the
picture, and move to the next point. I'd guess it'd take longer to
assemble the rig than to take the pictures, but neither would seemingly
take all that long of be all _that_ complicated.

TC,
R