Re: image brightness

[P3D Gregory J. Wageman <gjw@xxxxxxxxxx>]

Allan Woods inquires:

>This re-raises one of my original questions:
>How can one tell, by looking at a list of available lamps, which one
>will be (or appear) brighter.

I used Altavista to search for "projection lamp" on the Web, and came
up with a couple of references to the list sorted by three-letter code.
However, every one of those sites denies me access.  Bummer.

The way I found out about alternate lamps for my projectors was to read
the owner's manual, which listed two brighter choices (EXR, EHY[?]) and
one dimmer.  As the brightest one has a rated life of only 15 hours, 
and would also shorten the life of the slides, I passed on that option. 

>As you say, they are both rated at 300W, but it has been my experience,
>admittedly limited, that lumens are not listed for lamps with integral
>reflectors.

I've also been trying to find that information.  If I find a source,
I'll post it.

        -Greg


------------------------------