Re: Insomnia = brilliance?

[erker@xxxxxxxxxxxxxx (Greg Erker)]

>
>Good priority list.

  I think so, but then it's my list :)

>Greg, I don't wish insomnia on you or anyone, but it
>sure seems like you've used it well!

  I kinda amazed myself by what I can get
done when I have a big stretch of uninterrupted
time. Usually I have an hour or less after
Dawn and the kids are asleep and I'm seldom
ambitious enough to start something big.

>  http://www.angelfire.com/ca/erker/diacordl.html
>  http://www.angelfire.com/ca/erker/diacordg.html
>
>Question: which model do you have???

  I have an L and Bob has 2 or 3 L's.
I found a Diacord G on Goodwin Photos
web page and have ordered it. They all
have the same Rikenon lens though some
older cameras have f3.5 viewing lenses
and others (& the 225) have an f3.2
viewing lens. The taking is always f3.5


>You mentioned f/32 on your wish list, but you show these all
>as having maximum of f/22.

  Yes, but I discovered that the shutter
when removed from the camera will stop
down to about f45 (even with only 5 aperture
blades! Surprised me). Due to some gearing
in the 225 (and Diacord I think) lens panel
you won't be able to mod it to go past f32
or the last tooth of a partially toothed ring
will disengage.

  So I'm pretty sure I can get f32, or at
least f22+2/3 stops. (The last 3.5 teeth are
engaged at f22 so f32 should leave the last
tooth 1/2 engaged.)

>Though on your diacordg.html page, you say  'f/22 *'  but there's
>no (that I could see) footnote for the '*'...

  Typo, sorry. The Diacord G manual I have
says f16 as the smallest stop but a Diacord
fan I've been e-talking to says his goes to
f22. Could be something they changed over time.

  The more I learn about Ricoh's TLRs the
more unsure I become :)


>Question: was Beth much help?  <grin>

  She chewed on the 1/8" hexagonal
brass tubing piece I bought for coupling
the focus. It didn't fit, so I'm back
to my first method of using slightl
squashed 1/8" square brass tubing.


>It'd be nice to find a way. Linked apertures
>doesn't seem important until you use the camera ;)

  I know. I'm going to try real hard.
And if I can't figure it out maybe Sam
can when I send him the whole contraption.

>If you're willing to unload in a darkroom you could check up to
>ten cameras with a single roll of 120 B/W film.

  I'm not confident I can reroll the film a
bunch of times without getting it too lose
or having it run crooked and then tear.

  I'm thinking of just removing the taking
lens/shutter from all the cameras and
using them as a projection lens. Use them
to project some corner dots, mark them
on the wall and try the next lens. We'll
have to discuss this more later.

  Ideally we could have a standard method
then Bob and I can each measure our lenses
and then do some swapping if necessary to
get the best match.

>Greg - thanks for the detailed report!  Keep us up to date
>on this project!

  You're welcome.

Greg