Joseph, For many years I used Kodak's EPY 64 in 3200° K tungsten light, in the lab, to record biological subjects. Most, but not all of the time the light source was polarised and a polarising filter on the camera lens. My clients were in need of recording some the subtle colour variations in plant materials as a disease progressed, in the shape, texture, colour and "form" of fungal an bacterial cultures on a variety of growth media etc. Other films were tried at various times, but none (IMHO) that I could surpass the results that EPY could produce. That being said, it is worthy to note all our film was processed "in-house" with fresh chemicals. There were times in the "early days" when various rolls of Ektachrome,(from the same emulsion batch) exposed on the same subject, on the same day, and sent out for processing to a commercial lab were returned with obvious colour mis-matches. This can be the result of improper replenishment. If the subtle colour variations are important to you it might be reasonable to ask if the processor's chemistry is "in control". >Hello! Can someone recommend a color slide film that's most sensitive to >subtle color variations in the darks region--ie., somber, grayed colors? > >-Joseph Ken [||/\/\/\/\//\/|| Ken Sinclair RBP, FBPA. [|| ||-| Applied Photographic Services [|| || | Lethbridge, [|| || | Alberta, Canada, [|| ||-| (403) 381-1654. [||\/\/\/\//\/\|| photo1@telusplanet.net _0___________0______ |___________________ | O