Quote Originally Posted by Daniel Casper Lohenstein View Post
- Even though I signed up for the project, there is one serious point of concern: the ISO range: "1, 3, 6, 12, 25, 50, 80, 100, 125, 160, 200, 250, 320, 400, 800, 1600, 3200, 6400, 12800" Because the FP4+ developed 7'00'' in HC110H 1+63 at 20°C reaches density 0.12 in Zone I with an exposure of ISO 32. ISO 32 is not in the ISO range. In the lower ISO range only half steps are listed. Why? Isn't the goal of a spot meter to be accurate in thirds? I would URGENTLY ask the inventor to divide the ISO range into thirds.
Intermediate ISO's can easily be derived by +/- exposure compensation. For your EI 32 FP4+ example, set the ISO on the meter to 25, then dial in -0.03 exposure compensation.