Abstract

A system for generating custom variable neutral density filters has been built, characterized, and demonstrated. The desired densities for a neutral density filter are entered into the controlling computer as a function of distance. The program which generates the filter density profile is designed to vary the exposure time by controlling the velocity of the film as it moves under a slit aperture. A custom illumination system was designed and built to provide constant lamp output. The technique can provide the film with the exposure necessary to produce a given density profile.

Library of Congress Subject Headings

Photography--Light filters--Design and construction--Computer programs; Photographic optics--Computer programs

Publication Date

1-1-1985

Document Type

Thesis

Student Type

Undergraduate

Department, Program, or Center

School of Photographic Arts and Sciences (CIAS)

Advisor

Gary A. Dir

Comments

Physical copy available from RIT's Wallace Library at TR590.5 .H47 1985

Campus

RIT – Main Campus

Download

Share

COinS