From: 40 Frames (email suppressed)
Date: Tue Aug 17 2010 - 21:39:16 PDT
On Tue, Aug 17, 2010 at 8:54 PM, Christopher Harris
> Hello all,
> I very recently bought an Elmo 16 CL DELUXE projector with a 38mm lens and
> I noticed that compared to the Eiki owned by the university where I teach
> the throw is much wider than the Eiki with the ISCO 35-65 16MM zoom lens.
> Both projectors have 200W bulbs so I suppose that the difference in
> brightness comes down to the difference between the same lamp focused to a
> spotlight versus flooded. Even with the Elmo switched to "high" brightness
> its much dimmer than the Eiki.
> Any opinions? On or off list is fine by me.
The ISCO 35-65 is f1.3 while the Elmo 38mm (I believe) is f1.5. If the image
is wider on the Elmo and with the slight difference in speed, you'll see a
difference in brightness.
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-- 40 FRAMES Alain LeTourneau Pam Minty 40 FRAMES Attention: Pam Minty PO Box 15207 Portland, OR 97293 USA +1 503 231 6548 40frames.org 16mmdirectory.org
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