Re: [photo-3d] Stereo Camera Builders - Attention!

[Brian Reynolds <reynolds@xxxxxxxxx>]

John A. Rupkalvis wrote:
> If you really want some interesting "effect" stereo shots on 4x5,
> the widest angle lens that I am aware of that will cover the film
> size, was the 58mm Grandagon.  It required a special bellows
> (actually a single flute, looking like a bag) to allow the lens
> close enough to infinity focus on the film plane.  It just barely
> covered the film, with no shifts, swings, or tilts.  With cameras
> like the Sinar, the Calumet, and probably most others, you had to
> reverse one of the standards to get them close enough together to
> focus.  Amazingly, it had very little distortion.  There was some
> light falloff away from the center, but the Schneider center filter
> for the Angulons worked very well with the Grandagon (Rodenstock) as
> well.  Anyway, the results in stereo with most subjects were wild,
> if you are into that sort of thing.
> 

The current king of the short 4x5 lenses is the Schneider Super
Angulon XL 47mm f/5.6.  There is a 35mm Grandagon, but it only covers
6x12cm.

Bag bellows are a pretty standard accessory for view cameras that can
use short lenses.  Another option is a recessed lensboard.

There have been some advances in bellows making in order to attempt to
eliminate the need for a bag bellows (which is one more thing to drag
into the field).  Keith Canham (KB Canham cameras) is uing synthetic
materials to make the standard bellows both more flexible (so you
don't need a bag bellows) and more durable.  The Canham DLC (a 4x5
metal folding camera) can use 65mm lenses with movements on a flat
lensboard with the standard bellows.  The shortest lens I've used on
my DLC was 90mm, but the DLC handled it much better than the Wisner I
rented in the past.

Another manufacturer (Alt, I think) has made a combination bellows.
Part of it is a bag bellows and part pleated.  The idea is that when
the pleats are compressed you still have a bag bellows to work with.

I've taken a few 4x5 slidebar stereos, but they aren't anything
fantastic.  I do want to get a rollfilm back and try using the DLC to
do MF macro stereo.

-- 
Brian Reynolds                  | "Dee Dee!  Don't touch that button!"
reynolds@xxxxxxxxx              | "Oooh!"
http://www.panix.com/~reynolds  |    -- Dexter and Dee Dee
NAR# 54438                      |       "Dexter's Laboratory"


 

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