Kodak Ektar 100

ISO 100
Available in 35mm, 120. 4x5, 8x10
Very little grain
Occasional magenta cast but easy to correct
Technical Data Sheet

Compared to Portra Series

Much more saturated
Much less latitude
More contrast
Less forgiving on skin tones

Techniques

Shoot at box speed.
Don't overexpose, don't underexpose