Light diffusion and condensing fixture

A retrofit lighting apparatus for attaching to a light fixture and configured for modifying light from the light fixture, the retrofit lighting apparatus comprising:

• a frame structure comprising:
• an optical aperture defined by at least a portion of the frame structure;
• two or more film tensioners associated with the frame structure;
• and
• one or more reflective inner surfaces disposed adjacent to the frame structure;
• and
• at least one optical film comprising a least one lenticular lens surface, wherein the at least one optical film is suspended substantially parallel to a plane defined by the optical aperture by the two or more film tensioners.

A frame structure comprising:

• two or more corners;
• an optical aperture defined by at least a portion of the frame structure;
• at least one optical film;
• and
• two or more adjustable film tensioners integrated into the frame structure.

A light fixture configured for illuminating subjects, the light fixture comprising:

• an enclosure cavity with an opening and one or more reflective inner surfaces;
• a frame structure defining an optical aperture, wherein the frame structure is disposed proximate to the opening;
• at least one light source positioned between the one or more reflective inner surfaces and a plane defined by the optical aperture;
• and
• at least one optical film comprising a least one lenticular lens surface, wherein the at least one optical film is suspended or supported substantially parallel to or covering the optical aperture.