[rollei_list] Re: Infinity Focus
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Sun, 1 Aug 2010 07:11:51 -0700
----- Original Message -----
From: "Elias_Roustom" <elroustom@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Sunday, August 01, 2010 6:43 AM
Subject: [rollei_list] Infinity Focus
My 3.5F seems to be out of adjustment. Maybe it's
something I missed inspecting after it came back from
CLA.
I can focus on objects in the infinity range, but only by
turning the knob back out a bit from fully closed.
Is this an adjustment I can do easily myself?
Elias
---
There are two infinity adjustments on a Rollei; one is
the setting for the taking lens, the other is the
co-incidence setting for the finder lens. I am not sure how
the infinity stop is set on the F. On the E it is like
earlier Rolleis part of the focus knob and set by loosening
the collet that holds the knob on the shaft adjusting the
relative position of shaft and knob so that the stop comes
at the right place. This takes some means of viewing the
image in the film gate or as done in manuacture by using a
collimator and prism. The coincedence setting is done by
first setting the infinty stop correctly and then adjusting
the focus of the finder lens to match. The finder lenses are
adjusted by rotating them. There are two kinds of locks on
the lens. On some cameras there is a set screw and in others
a clamp. In either case you have to remove the front panel.
This is not trivial in an E or F.
Make sure that the ground glass is seated correctly. If
its slightly depressed it can cause the symptom you
describe. Just push at it with your fingers. If this doesn't
cure the problem the camera should be returned to whoever
worked on it.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
---
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