[MF3D.FORUM:936] Re: MF Projection

[Tom Hubin <thubin@xxxxxxxxx>]

Richard Twichell wrote:
> 
> Paul said and Tom replied:
> 
> > > Not to be combative, but a lot of people use them with the
> > > white side forward and the back in black (often for projection
> > > reasons, presumably).
> >
> > I'd like to know why. I have seen it done but it makes no sense to me.
> > Absorption of IR and light by the black surface will contribute to
> > heating the mount and the slide. White on the projection side makes the
> > mount more visible on the screen.
> 
> Uh, I think you are in agreement here.  If I read Paul right, he is
> referring to a mount in a viewer - white "forward", toward the viewee,
> black "in back".

Hello Richard,

Mounting for viewers and projectors should be the same. The mount black
surface is on the same side as the slide emulsion and the viewer's
eyepiece and the projection screen. The mount white surface is on the
side of the light source. 

Tom Hubin
thubin@xxxxxxxxx
AO Systems Design