To provide a cellulose film having little optical unevenness, having less variation in retardation (Re) within a plane by fluctuation in humidity level as well as retardation in the thickness direction (Rth), and having mechanical strength suitable for optical films, to provide an optical retardation film, optical compensation film, plarizing plate and image display device using the same.

The cellulose film comprises an aliphatic acyl group (A) having a substituent of a 5-30C aliphatic acyl group (B) having a 2-4C substituent, wherein the difference between the maximum and minimum values of degree distribution of orientation angle in a film range of 60 mm60 mm is 0.50 degrees or less.