Re: Exact fl of lenses... 220 VR

[Bill Glickman <bglick@xxxxxxxx>]

James

     Thank you for the support....  you kinda reminded me of the benefits of
such a forum...

     As for your comments.... an optical bench is not that answer in this
rotational camera, but it could act as a starting point.....but I am way
past that.  The issue here is not entering into the brain box the optical
bench fl, but rather the fl that is in sync with motor speed which will
utilize the perfect amount of film to prevent the slightest bit of
compression or stretch.  If there was a control knob to do this, it  might
also be effective, but quite confusing with all the different lenses, etc.
So unfortunately, the only way to match everything up, is by changing the fl
in the brain box.

      When I started testing this, I had no idea it would be this involved.
Mr. Seitz recommends shooting letters, however, I tried that.  My method of
matching aspect ratios of buildings much more accurate.   I think the
Seitz's answer short for two reasons,  one is, as you say, it's there second
language and other reason is they don't have that much time for tech.
support, they have to build cameras...  It's a unique camera with unique set
of circumstances surrounding every aspect of it  :-)

Bill G



----- Original Message -----
From: "James Young" <jamiehy@xxxxxxxxxxxxxxxx>
To: <panorama-l@xxxxxxxxxxxxxxxxx>
Sent: Thursday, June 15, 2000 6:43 PM
Subject: Re: Exact fl of lenses... 220 VR


> Bill - Don't be sorry - This list is about Pan photography, and
> getting your camera to work well is part of it. I think you should
> ask Peter Seitz for a detailed procedure on how to measure the focal
> length.The biggest problem is the fact that English is a second
> language for them, which is probably why answers from Seitz are
> short. They must have a system for doing it.  Or you should find
> someone with an optical bench and have them do it. Maybe Professional
> camera repair on 47th street in NYC can do it (If they are still
> there). Call the various camera repair places and find someone with
> the knowledge and equipment. Another place to try might be the
> physics department of a local university. Also, ask Mr seitz to
> recommend others with 220 vr's who are using mamiya lenses to share
> their info. If Charles doesn't want to hear you solve your pan camera
> problem he can delete the email or unsubscribe  - Good luck! Jamie
>
> >I am sorry Charles, I thought this was the purpose of the forum.  In the
> >future, I will keep this information to myself.  I mistakenly thought I
was
> >helping other 220 users.
> >
> >Regards
> >Bill G
> >
> >----- Original Message -----
> >From: <CharlesofSC@xxxxxxx>
> >To: <panorama-l@xxxxxxxxxxxxxxxxx>
> >Sent: Wednesday, June 14, 2000 8:29 PM
> >Subject: Re: Exact fl of lenses... 220 VR
> >
> >
> >>  Good God, haven't we worked this FL of lenses to death. Why don't
those of
> >>  you who are really interested talk to each other about it. I'm
personally
> >>  sick of hearing about it.
> >>
> >>  The longer focal length you have the less depth of field you have at a
> >given
> >  > f stop. Please let it lay or just talk among yourselves, please.
> >  >
> >  > CharlesofSiouxCity
>