P3D Re: Hack a Nimslo to take close(r)-up shots

[erker@xxxxxxxxxxxxxx (Greg Erker)]

Tom Gardner wrote:
>All I did was to adjust
>the position of the two centre lenses so that they focussed at about
>2.5', IIRC. Technique: take off the "leatherette", then the camera
>front, loosen the lockrings around the centre two lenses, then in a
>dark room put a brightly lit object at the desired position and adjust
>the lens position until the a sharp image is seen on a piece of ground
>glass held at the film plane. No rocket science needed.

  Thanks for the handy tip.

  For those that find the infinity focus of the Nimslo
too soft, they can adjust their outer two lenses (or all
4 if desired) to move the focus point further out.

>There is no problem with the lenses' performance, but it is quite easy
>to get
>excessive depth of field and to have an exaggerated Z dimension. I
>presume
>these characteristics are common to all closer-up stereo photography,

  I would assume this is from taking the photo
with a 30mm lens and then viewing it with a longer
FL lens (like the 44mm in the Red Button which would
give a stretch of 44/30 = 47%).

Greg E.



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