[photo-3d] My RBT 101 Stereo Projector!

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

OK, you asked for it! :)

Some of you might remember last year when I was asking 
for information about the RBT 101 stereo projector, 
wondering if I should get one.  I read all the responses 
carefully and decided to go for it.  

Last night I put the projector together and tried it out.  
I am happy to report that this projector is exactly what 
I had hoped for, and more!  I am extremely pleased.

I knew what the strong points of this projector are:  
World's only stereo projector with automatic slide feed, 
remote control and autofocusing.  I just did not know 
how well these features work.  There were some worries 
in the back of mind about slides jamming and things not 
working out as expected.  I was also concerned about the 
delay from slide to slide, being used to the extremely 
quick slide change of my TDC projector and the dissolve 
feature of my Brackett Dissolver.  I also knew nothing 
about the lenses used in the RBT projector and the various 
controls and how well they work.

So I was a bit nervous when I deposited a serious amount 
of money, hoping that all will work well.

Well, I am happy to confirm that everything works as 
planned!  The projector uses Leica P projection lenses.  
According to some discussions floating around the internet, 
these could be some of the sharpest projection lenses 
available today.  My RBT projector was ordered with zoom 
lenses but because of some production backup I was given 
a pair of fixed Leica Elmarons 120mm (my choice) 2.8 
lenses to start.  I am extremely happy with the sharpness 
and the FL matching in this pair.

The projector uses a pair 250W halogen bulbs and it offers 
a rheostat for continuous adjustment of lamp brightness.  
Because I was testing the projector on a small screen last 
night, I had to turn the brightness down!  There is an 
interesting procedure for aligning the lamp filaments.  You 
are given a metal slide with two pinholes and are asked to 
align the filaments as observed on the lens caps placed over 
the lenses.  I plan to try this on a TDC projector.

The lenses focus by rotating their barrels but once they 
are focused then you can turn the autofocus feature on 
and forget about focusing.  The horizontal and vertical 
adjustment controls also work well and also you can forget 
about them once you align the first slide, because the 
positioning of the slides is extremely accurate.

Imagine... no adjustments during projection.  Heresy!  :)

To be continued....

George Themelis

 

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