P3D Re: FWD: TDC Model 116 and 716 Projectors

["Norm in S.F." <normlehf@xxxxxxxxxxx>]

I have been trying to decide whether or not to keep or sell a 716 or a
Compco Triad. The Triad has some features I like, such as the polarizers
being in front of the film. It doesn't haven't an automatic changer such
as the Selectron, but I guess everyone agrees that is a dubious
advantage.

Does anyone know if the triad is at least as bright as the 116?

Norm Lehfeldt

Dr. George A. Themelis wrote:
> 
> Message from Gary Nored, rejected because of HTLM code...
> 
> ---
> A few years back there was a thread regarding which of these two
> projectors is the brightest. The results of much discussion and
> calculation left open the possibility that the Model 116 _might_ be
> the brighter of the two.
> 
> At last we have a meaningful comparison of the two. For the moment I
> have both the TDC 116 (500 watts) and the TDC 716 (750 watts), both
> with 4 inch, f 3.5 lenses. Sure enough, the Model 716 is 1/2 stop
> brighter. It's also 50 percent hotter, and somewhat noisier.  Both
> machines produce bright, clear images. The 716 might have the edge in
> situations where the ambient light was high, but without having the
> two of them side by side, one would be hard put to tell the difference
> in the projected image.
> 
> Gary Nored


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