Slide projection

Darren Kelly (
Fri, 12 Jun 1998 15:56:03 +0200 (MET DST)

Quick lighting question:

I recently used a good quality 300W Leika projector at performance to
project slides onto a 150 cm x 150 cm screen, and some people said it was
too faint. The venue was relatively bright, but the stage was not heavily

The 150 cm x 150 cm screen is certainly a little smaller than desired, but
there was no large, white surface available. The projector to screen
distance was 4 m, giving nice coverage of the screen area. I'm anxious
that the results will be inadequate when I do project onto a larger screen
or surface. The screen was of good quality, but white. The reverse side is
silver. The silver side seemed, if anything, dimmer when I tested it.

I used this setup on the recommendation of the photographer who made the
slides (from wall paintings). The slides are very good quality, and he
made slides 3 stops either side of his ideal exposure guess, so I can try
the darkest stops next time. A test, however, showed that these stops
weren't generous enough.

I also have large format slides, but these are too precious for me to use
live often.

Glad for tips or pointers about how to get the most out of my modest
setup, which was quite an investment for me.


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