ARTIST'S AID

An artist's aid comprising a sheet member which includes a transparent green filter for determining the differences in reflected light among various surfaces appearing in a visual field, a square aperture for framing a selected portion of the visual field, a circular aperture for visually isolating a relatively small portion of an object appearing in the visual fields, and three apertures arranged at the vertices of a triangle for visually separating a plurality of objects appearing inthe visual field.