[photo-3d] Re: Fade / dissolve (was How to put together a stereo slide show?)

[Paul Talbot <ptww@xxxxxxxxx>]

Peter Abrahams wrote:

> Fade / dissolve.  This useful tool is very overused.  It requires a
> sequence of slides that have similar depth properties.  It is very
> stressful to have two partly dissolved slides on the screen that have
> different disparity or different near points.  This imposes very strict
> requirements on the sequence of slides, that I find are almost never
> adhered to.  Some people think that fast fades mean that anything goes, but
> I disagree.
> I think that 'old fashioned' on / off projectors are undeservedly
> considered obsolete.

I didn't see much discussion of this, but I wanted to
bring it up after my experiences viewing stereo theater
at NSA Mesa.  I felt a lot of visual discomfort viewing
many of the shows at Mesa, probably for a number of
different reasons.  One of the obvious reasons, though,
was a very heavy dose of fade/dissolve, with exactly the
problems Peter describe.

Do the modern projectors with fade/dissolve allow slides
to be changed without using that feature?  I certainly
hope to see more judicious use of fade/dissolve in future
NSA shows.

Paul Talbot