[rollei_list] Re: shimming maxwell screens
- From: "Stephen Attaway" <stephen@xxxxxxxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Sun, 20 Jul 2008 15:02:11 -0700
Hi Jerry:
Thought about the plate back, and almost bought one myself for just this
purpose, but decided it wasn't that much more expensive to just send the camera
out.
Dymo tape shims are by guess and by gosh but are probably closer to right than
no shims - most times.
And with the 3.5 you have a bit of built-in room for guessing because of the
tighter depth of field in the f2.8 viewing lens. It can be a little off and
still within the dof of the f3.5 taking lens.
Were it me, I would tinker with the dymo first and if it didn't improve things,
send the camera out.
But then, I love useless tinkering...
.
----- Original Message -----
From: Jerry Lehrer
To: rollei_list@xxxxxxxxxxxxx
Sent: Sunday, July 20, 2008 2:05 PM
Subject: [rollei_list] Re: shimming maxwell screens
Eric et al,
I agree. My method is to set up with the GG screen on the Rollei Plate Back.
Check infinity
setting. Shim viewing screen to agree with infinity setting. This assumes
that both taking and
viewing lenses have exactly the same focal length. If not, set the screens
to match focus at
your most used distance.
Jerry
Eric Goldstein wrote:
I would not trust the Bill Maxwell/ Dymo tape shimming method to be
foolproof and/or accurate. While the late/great Steve Grimes installed
a Beattie on my 2.8C a few years ago, he said you cannot trust cameras
of this vintage to be consistent enough so that shimming without
direct measurement and collimation is reliable.
Eric Goldstein
--
On 7/20/08, Jordan Wosnick <jwosnick@xxxxxxxxx> wrote:
Stephen -- I did install the Maxwell screen myself, so maybe it is the
camera that needs work. I followed Bill Maxwell's instructions, which seemed
clear enough, but this is the first time I've checked the focus.
Apparently it's possible to adjust the viewfinder focus through means other
than shimming. Is this kind of adjustment usually done as part of a CLA? (If
it is, and I find a reasonable place to get a CLA done, I may just go ahead
and do that.)
Jordan
On Sun, Jul 20, 2008 at 2:06 PM, Stephen Attaway
<stephen@xxxxxxxxxxxxxxxxxx> wrote:
Hi Jordan:
If you want to save some bucks, you can make long narrow shims of paper or
plastic to fit between the focusing hood and the camera body. One for
each
side, Punch little holes in them for two little mounting screws. Its fiddly
to line the shims up, but nothing you can't handle if you have already
swapped screens yourself.
I believe Bill Maxwell used to provide instructions with the screen on how
to do this shimming. That would include the correct shim stock to use.
Here is some rather old contact info I found:
http://www.mattclara.com/maxwell/index.html Or maybe
someone on the list has Bill's instructions?
Harry Fleanor points out on his site that a shimmed screen can't be any
more accurate than your original, which might no longer be that great
after
50+ years. Better to send it out.
Perfectly true: the 2.8e Planar I sent to Harry now pulls 47 lpmm wide
open, which is better than Modern Photo got with a brand new camera back
in
'63.
http://www.rolleirepairs.com/maxscreen.htm
----- Original Message -----
From: Jordan Wosnick
To: rollei_list@xxxxxxxxxxxxx
Sent: Saturday, July 19, 2008 6:57 PM
Subject: [rollei_list] Repair work in Toronto (Canada)?
Hi everyone,
My Rolleiflex 3.5E needs some work. Not quite a CLA, but the focussing
screen shims need to be adjusted (I installed a Maxwell screen myself
about
a year ago and am embarrassed at how much film I've shot since then, with
the focus out-of-whack! Thank heavens for depth of field.)
Does anyone know a reputable shop in Toronto (Canada) who will do this
work? Or is it best to send it to someone in the States?
Jordan
--
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