gordon@bolton.UUCP (Gordon Partridge) (09/16/84)
3M has a relatively new film balanced for tungsten light with an ASA rating of 640. It can be pushed , but I recommend against it. It is rather grainy, and very grainy when pushed, but the color is satisfactory, though not as good as Kodachrome. But ASA 640 gets you a lot of pictures that are impossible otherwise! (I do a lot of ballet photography, and flash is absolutely anathema in ballet. The flash can distract a dancer to the point of being a safety hazard.) One interesting phenomenon I noticed on the only roll I pushed 2 stops (to ASA 2560!) was triboluminescence. This is the production of light from static. You can see it if you pull your undershirt off rapidly in a very dark bedroom. The static causes streaks of light that are caught by the film when it is pushed 2 stops. They look like a tree branch that fans out to twigs, and can cover several slides. You can see the pattern expand as you hold side by side slides taken in sequence. In the Boston area, it is sold by Newtonville Camera. Gordon Partridge, GenRad, Inc., Mail Stop 98, Route 117, Bolton, MA 01740