Archived posting to the Leica Users Group, 2009/04/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 01:44 AM 4/13/2009, Gary Dalton wrote: > >I have a Revere ST 33, a 35mm stereo camera. > >It's instruction manual indicates that it takes ASA 10 daylight color >film or ASA 16 indoor film (plus conversion filters for outdoors). >That's it. There's no dial to select other ASA settings. > >In today's world, what might be my film options and where might I get >such film? > >Would a "modern film" substitue require "pushing" the film during the >development process? The ASA scale was recomputed around 1958, effectively doubling ASA speeds. So, I suspect that we are looking here at what we would know as ASA 20 and 32 films. Bear in mind that relationship between film speed, exposure requirements, and aperture and shutter speed. It is a calculus, but one rather easy to understand. If you use, say, a 200 speed film, you can either use a bunch of ND filters to bring the effective film speed down to ASA 20 or you can adjust the f/stop and shutter speed to compensate for the ten-fold increase in film speed. I am unfamiliar with the Revere cameras (though I have and use a really great Revere 8mm projector), but that would be my thoughts on the issue. Experimentation is encouraged. Thank heavens my own stereo gear -- two Contaflex models, a Zorki rig, and a Kiev RF rig -- all just trust the photographer to know and love the "Sunny 16" rule. Marc msmall at aya.yale.edu Cha robh b?s fir gun ghr?s fir!