Thank you, Chris.. This particular film was the best available and discontinued in November 2012. I stocked some 4x5s. There's plenty of opinions on how to meter for this film. I do not use light meter. By testing, I found f22 or f16 with with 1sec or 1/2 sec. reliable numbers between noon and 3 p.m. in California on a sunny day, and depart from that for partly cloudy images. Some factoring is also necessary for the seasons.