----- Original Message ----- From: "frank theriault" Subject: Re: wrong iso choosen
> Hi, Bill, > > I don't really want to get into this, because as you say, it comes up all the > time, BUT <g>: > > Are you saying that regular old non-C41 B&W can't be pushed? It seems to be > that is what you said. Not that I'm taking issue with your statement. I'll > continue to expose Tri-X and HP5+ at 800 or 1600, continue to take it into my > lab, and tell Rob (the lab owner), "I pushed this one (or two, as the case may > be) stops". And he'll continue to give me back prints that seem to be exposed > correctly - that's all that really matters to me. <vbg> I'm not saying it can't be pushed. I just don't think that there is any effective speed increase from doing it. When I was lab testing films while learning the zone system, I found that an N+2 process (thats a two stop "push") gave about a 1/3 stop increase in real film speed. William Robb
