Exposure Values for Zone III and Reciprocity Calculations

A couple weeks ago I began to talk about my metering technique for the Zone System. I use exposure values for the shadows when metering and always adjust the metered value to Zone III. As I find myself using longer exposure times, I realized I needed to start adjusting for reciprocity rates of film as well as making a quick cheat sheet for using other meters for EV. I am only using Ilford Delta 100 and HP5 Plus right now, so they are the only charts I have added for my personal use and thought I would share them out. I actually have them bookmarked on my cellphone if you want to bookmark as well, or download these images below for quick reference.

Read More