posted 12-21-2008 10:10 PM                    

quote: Louis Bornwasser

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...most projectors today are not as good...

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posted 12-22-2008 02:19 AM                    

quote: Steve Guttag

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You can stop right now...you'll never get the image out of the lens and if you could, you'll never get it out of the projector.

Most anamorphics can't handle less than 50mm...though, depending on throw, one might be able to get a 47.5 or even a 45mm to work...normally not though. ISCO did make three very special versions of the Blue-Star integrated anamorphic....the shortest being 42mm. You won't find it very easily and would pay top dollar to have it made new (it has always been special order)...it also will likely vignette in a Super Simplex.

Steve

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Well, in that case, I may end up having to use a smaller screen. The computer says at a 50 ft throw, using a 50mm 'scope lens, the image size would be just under 18 ft. If I could pull back to 56 ft. I could get a 20 ft. wide image and in order to get my magic 25 ft wide image, I'd need to set the projector back at 70 ft. One Hell of a throw for a portable dallies projector. I'm currently looking for a warehouse to buy to put my studio in along with my processing lab and editing suites. It mat be possible to get close to that kind of throw in a 40 x 60 building which is about what I'm looking at. Maybe I could put a booth up on the roof of the editing suites with a screen at the other end and the sound system fixed on the walls which I figure should be fine if I build them at normal room height say 8 to 10 feet on a 20 ft to 25 ft tall building. I'm also like to put theater seating and casters on a pair of risers I have so we could do possibly do some test screenings. My current building, which I rent, is 100 x 50 but is only 10 ft tall so it doesn't work all that well as a studio, though we have shot some stuff there. It also has a VERY bad roof and leaks like a sieve. I plan on making getting into a new building a priority this coming year.

posted 12-22-2008 12:54 PM                    

quote: schneideroptik.de

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This lens attachment transposes the exit pupil of the lens toward the front thanks to its additional glass distance without having even the slightest negative effect on the imaging. It is used with lenses which have a short focal length and which are needed with a very large screen with only a short projection dis-tance. The Extension avoids partial vignetting of the wide image which can e.g. be caused by parts of the projector which extend into the beam path, parts of other lenses in the same lens revolver or by too nar-row a window.

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