Quote Originally Posted by wm blunt
...I use the little "Power Wheel" and it works great, take a reading in the shadows and one in open light, adjust the wheel and it gives you the exposure needed and tells you the SBR so you know how to develope the neg for what ever range you need....
Quick question:

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.)