Re: Finding correct Cirkut gears by shooting.

["George S. Pearl" <alps007@xxxxxxxxxxxxxx>]

Hey Colin,
   I even like that one, and I don't shoot the cirkut ! I like the keep it
simple method.
George S. Pearl, QPP




----- Original Message -----
From: Colin Bullard <cirkutoz@xxxxxxxxxxx>
To: <panorama-l@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, January 25, 2000 3:52 AM
Subject: Re: Finding correct Cirkut gears by shooting.


> Leonard
>
> Simplest method is to get a 36" square sheet of white cardboard and make a
black cross about 2" wide across the centre of it. The vertical and
horizontal lines will be the
> same length. This is your target. Photograph it at whatever distance you
want to check for your gear. Process the film and when both the vertical and
horizontal lines are
> the same length you have the right gear. ( The vertical line always stays
the same height, the horizontal line will be either longer or shorter
depending on the gear
> used)  Hows that Ron?
>
>  Colin Bullard
> Melba Studios
> Sydney Australia.....its heartening to see all this discussion on our
venerable Cirkuts Guys, keep it up!
>
>
> Leonard Robertson wrote:
>
> > I've been told I can find the right gear for a lens (without knowing the
> > exact focal length), by shooting film at different focus settings, and
> > picking the sharpest image. As I recall, it is best to shoot something
like
> > a sign where letters "smear" if the focus is wrong. I have Mr. Lipari's
> > formulas so I can figure the approximate gear as a starting point. I'll
be
> > shooting on 220 film in my #8 Circut, and it seems I can get several
short
> > test shots per roll. Is this idea at all workable, or should I just go
> > ahead and build a nodal slide to find the exact focal length? If this
> > method works, any hints will be appreciated. Thanks.
> >
Leonard
>