Hi Deb The Sensia is the amateur version of Provia. In Pro Grade films, the film is aged and color balance (bias) is constant. Sensia is a good film and I'd say "Have Fun". I'm off to Haleakala in about a half hour to our Kalahaku site at 9324'. It'll be real nice as it is still and warm and humid. The clouds have come in, the Crater Cam shows overcast, but in 2 hrs it'll be clear and getting dark. Tonite we get to play w/ Penrod's CGE14 Hyperstar and his SBIG camera. Aloha Rob