[Frameworks] 16mm Xenon projection suggestion please

[Tom Whiteside]

I don't agree on the ELC comparison. In my experience xenon beats an ELC every day for brightness. Aren't there plenty of portable xenons that take a full range of lenses? On the B&H 1568 (not xenon, but the somewhat comparable Marc 300) I use an f/1.2 50"lens, same as I use on tungsten B&H's. Is this f/1.2 lens exclusive to Bell and Howell?

BTW, f/1.2 is the fastest a lens can be, correct? "f/1" is theoretical, all the light passes through. And I've never seen f/1.1.  If I'm wrong, enlighten me.
	
	- Tom     Durham, NC

-----Original Message-----
From: frameworks-bounces at jonasmekasfilms.com [mailto:frameworks-bounces at jonasmekasfilms.com] On Behalf Of David Tetzlaff
Sent: Friday, July 15, 2011 9:33 AM
To: Experimental Film Discussion List
Subject: Re: [Frameworks] 16mm Xenon projection suggestion please

Any Xenon you could move around won't be all that much brighter than anything using an ELC tungsten (e.g. Eiki or Elmo) with a fast lens. There are like f1.2 lenses for those projectors, which is around a full stop faster than a f1.8. Throw per se isn't really an issue. Screen size is. The projector only has a finite light output, and if you spread that over a wider area, it gets dimmer (whether by increasing rhe throw w/o changing the focal length, or by going to a wider focal length w/o increasing the throw). 


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