Dave,
I have the tubes and the 90LS. I could swear that I have shot that
way before. I just put #1 tubes on with the 90 and dry-fired it
with the regular shutter and the leaf. What happens is that if the
leaf is cocked, it will close the shutter when you press the shutter
release but it will not fire the shutter. The net result is that you
will get a blank picture. However, if you don't use the leaf shutter
(uncocked), it works just fine with the tubes - no different than any
of my other lenses.
HTH,
Brother Bruce
Monday, June 16, 2003, 11:31:18 PM, you wrote:
bcin> Hi Gang.
bcin> Well i'v never seen Jr. have such a bad show day since 1996,but i'm a parent and
have
bcin> to put up with bad show days instead of utilizing great IR weather,D'oh.
bcin> Just wondering if anyone in the 'hood,uses the extension tubes with the 90mm
bcin> f2.8 LS lens.I was just looking at the pdf download from Pentax,and it gave info
for
bcin> the 55,77 and 105(plus the others)but no 90.It later stated the leaf shutter
gets in the
bcin> way. I was
bcin> hoping to use this lens to start some 6x7 macro,but it looks like i'll need to
look for
bcin> the 105,135 or a 200
bcin> or so.
bcin> Any comments.
bcin> Dave(getting a fuji 400 f back today)Brooks
bcin> BTW sun all this week so hopefully i can bang off my 1st roll of IR this
season.Man what
bcin> a bummer of a spring.
