Shel wrote:
> The mystery item I want to photograph is about 11mm in diameter.
> I would like to fill as much of the frame with it as possible,
> i.e. about 2X magnification. I haven't been able to do that
> with just the lens alone or the lens with 68mm worth of tubes,
> that's why thoughts of greater extension are running through
> my mind.
Hmmm - your limitation is now clearer. Do you happen to
have a 35mm lens? Your 68mm of tubes plus its own helical
extension would allow 2:1 I suspect your quality concerns
will be OK if all details of technique are tended to.
another option is reversing a 50mm to your 100mm
... or gathering up more tubes to take your 100mm to 2:1
hmmm, if the 100mm goes to 1:1 you may get near 2:1 w/ 68mm
of tubes
If you do have a 35mm, I'd at least test that option. sounds
like your subject is likely to be a small flat object, so you
may be able to rig a staging platform even w/ the close distance
you'll end up with.
on the humor side - if you just want to fill the frame, use
an APS or a 110 !8^D
Bill
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Bill D. Casselberry ; Photography on the Oregon Coast
http://www.orednet.org/~bcasselb
[EMAIL PROTECTED]
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