[photo-3d] Re: Stereo Dissolve- problem?

["Mike Kersenbrock" <michaelk@xxxxxxxxxxxx>]

--- In photo-3d@xxxxxxxxxxx, "Dr. George A. Themelis" <drt-3d@xxxx> 
wrote:
> There was a comment in the MF list about someone
> getting sick during a stereo dissolve projection and
> I remember there were a few people who had
> similar problems last time we discussed this in
> photo-3d.

I've not gotten sick from it, but I had mentioned a couple
years ago that I had a problem with some dissolves at
the NSA convention.


> Personally, not only I don't  have a problem with
> stereo dissolve but I also see it as a nice thing to have.
> It can be fun or instructional.  A nice effect to have
> in your disposal.  Now that I am getting an RBT
> projector 

Wouldn't you need two RBT projectors to have dissolve
problems?

> I am a little bit worried about the lag going
> from one slide to the other.  I wish this was smaller
> or zero (=dissolve).

I thought "dissolve" was when one stereo image faded out
and the other faded in simultaneously (why two RBT
projectors would be needed so that both are projecting a
dimmed image simultaneously during the crossover).

> So can someone help me understand what the problem
> is and why it does not affect me?

If talking about the "dissolve" problem as I know it,
the problem only occurs with particular sequences of
images -- ones that aren't "compatible" need to be 
switched much faster (or maybe even with a black interlude
if REALLY incompatible).  I haven't yet characterized 
what is good and what isn't, only that I've noticed
(seeing Brackett projector dissolves) that some 
sequence pairs were bothersome though most were okay.

If those experienced at this would explain that which they
use to judge sequence compatiblity and required dissolve-time I'd
much appreciate it.

Mike K.


> 
> Thanks,
> 
> George