[photo-3d] Re: 7p stereo cameras

["Chuck Holzner" <cfholzner@xxxxxxxx>]

--- In photo-3d@xxxxxxxxxxx, "Dr. George A. Themelis" <drt-3d@xxxx> 
wrote:
> Chuck writes:
> 
> >I bought a FED to try the Euro Format that I was hearing so much 
> >about, you know, how "wider is better".
> 
> So what did you conclude about that?
> 
Better for landscapes and other horizontal things.
Not as good for trees and other vertical things..


> There are three "European" 7p format cameras:
> Iloca Original, 
moves film 7 & 21 perfs.
Belplasca 
moves 7 & 20 perfs.
 Busch Verascope
moves it 6 2/3 and 20 perfs.

Is that the way you understand it to be?

I think the FED uses the verascope format.

> >Are you saying that the Realist is as good as a S1 
> >in manual mode?  Which Realist?
> 
> Any Realist.  Even a Realist 3.5 can take spectacular
> stereo pictures.  It is unfair to compare the 7-element
> Hexar lens with the 3-element Realist 3.5 lens but 
> in many situations and for many people there is little
> difference between the two.
> 
I think that is mostly because of higher speed film.  In the 50s they 
were using ASA 10 film and on sunny days F6.3.  With the good films 
we enjoy today I would guess that most people are using F16 most of 
the time, I know that I do.  At F16 most any lense will perform near 
the theoretic diffraction limit.

> I don't think
> there are "best f2.8" lenses.  I have tried all variations
> of the Realist 2.8s and nothing jumps outs as being better
> than the rest.  

I have heard that the Realist Custom has the sharpest lenses ever put 
on a stereo camera.  ( I have also heard that for the Belplasca)  So 
you are saying that there really isn't much difference between a 
Realist Custom and the F2.8 Realist with David Whites?

Second, the 2.8 is a 4-element lens and
> performs are well as the Belplasca and Verascope lenses.
> 
> George

Or the Belplasca either.


Thanks George,

Chuck