I have a pro-pack of Ektachrome E 100VS from 2003 that has been kept refridgerated. I have heard is is better to slightly under expose slide film for more saturated colors. Should I shoot it at ASA 125, 160 or just shoot it at ASA 100. I guess I could shoot 1/3 of the roll at each of these speeds to test the first roll. I will have 4 rolls left after I shoot this. I got the film free at a Photo Club meeting when a pro photog. was retiring, so I have no money tied up in it. I will probably use my Nikon FM2n and a Zeiss 50mm f/1.4 lens. When I finish the roll, I will probably send it to Dwayne's Photo Lab, unless someone recommends a better lab.