Lens matching (was Insomnia = brilliance?)

[erker@xxxxxxxxxxxxxx (Greg Erker)]

>Yes, that would be great--I was thinking along the same
>lines, but don't have any concrete ideas yet.  Maybe we
>could build a crude, shipable optical bench set-up with
>a projection bulb, condensor lens, slide-holder, and a
>place to mount a camera with the back taken off?

  I'd rather not ship whole cameras due to
the postal costs and customs issues.

  Are you hesitant to remove the taking lens/
shutter assembly (from all your cameras)?

  One idea is for me to test all my four lenses
relative to a specific one. Then send that
lens to you with my test slide.

  You measure all yours relative to mine and
we know know all the relative differences
(with some increased error between my lens
#2, 3, and 4 and yours).

  If the results look good we swap appropriately
and double check the supposedly matched pair.

  One thing I'm not sure about, regarding this
plan is whether unscrewing the lenses from
one shutter and screwing them into another will
physically fit, and also if it will affect the
focal length.

  That could make it difficult or impossible
to get matched focal lengths in my two 225
shutters (if things get screwed up by swapping
or if I can't us Diacord G lenses).

Greg