Originally Posted by wm blunt
I bought "BTZS Lite" and understand how to figure out the exposure/SBR using the tool. But how do you know how to develop the negative -- if I recall the tool gives you the G-bar (average gradient) which is supposed to tell you how to develop the film. But I don't see any information mapping the G-bar to the development time. Do you need to purchase the ExpoDev Palm software to fully use "BTZS Lite"?
(I'm having trouble locating the tool, so I might be mis-rembering the G-bar.)