DOF / depth of field (or depth of focus) is what this site is all about. Depth of field (DOF) is the distance in front of and beyond a subject that appears to be in focus. Obtaining different depths of field can create dramatic, film-like effects that will take your productions to the next level.

An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic aberration.

Ground Glass is glass whose surface has been ground to produce a flat, matte finish. A sheet of ground glass is used for the manual focusing of both still and motion picture cameras.