P3D Re: PHOTO-3D digest

[Michael Kersenbrock <michaelk@xxxxxxxxxxxx>]

Olivier Cahen wrote:

> Hello and thanks for your interesting contributions.
> Many people seem to want beamsplitters, and they ask for addresses of
> beamsplitter vendors.
> I do not understand why they want to purchase such a stupid device,

Short of very spendy devices, it's a way to have both a very fast shutter stereo
camera as well as having a TTL light meter (or an integrated light meter of
any sort).  Has it's limitations, but has its niche as well.  I started with one.

> since it can only make pictures with such a huge keystoning that they

At least with my Pentax splitter, keystoning seemed very hard to spot
in most images. Further, when viewed through the viewers supplied
with the splitters, any keystoning usually is compensated for and the
result is keystone-less.

> are definitely unsuited to projection, with absolutely no means to
> compensate this keystoning, unless these people can also purchase only

Projection is not one of the plusses for splitters. I can project  beamsplit
slides, but don't. Projection isn't a requirement to enjoy stereo
photography, even if it is quite nice.  Even with realist/European format
slides, vast majority of my viewing is done with hand-viewers, not projection.

Mike K.