Light table

A device used for viewing photographic film or artwork

A light table is a device that provides uniform illumination of a translucent surface, used for viewing photographic film, tracing artwork, or examining other transparent materials. Light tables are commonly used in various fields such as photography, graphic design, and medical imaging.

Design and Function

A light table typically consists of a flat, translucent surface that is illuminated from below by a light source. The light source is usually a series of fluorescent or LED lights that provide even, diffuse illumination across the surface. This setup allows for the clear viewing of transparencies, negatives, and other translucent materials.

A light table in a command center

The surface of a light table is often made of glass or acrylic, which is durable and easy to clean. The light intensity can sometimes be adjusted to suit different viewing needs, and some advanced models may include features such as magnification or color correction.

Uses

Light tables are used in a variety of professional and creative contexts:

Photography

In photography, light tables are essential for viewing and sorting film negatives and slides. Photographers use them to examine the details of their images, select the best shots, and make decisions about editing and printing.

Graphic Design

Graphic designers use light tables for tracing and layout work. By placing a design or illustration on the light table, designers can trace over it onto another sheet of paper or make adjustments to the original artwork.

An illustrator draftsman using a light table

Medical Imaging

In the medical field, light tables are used to view X-ray films and other medical images. Radiologists and other medical professionals rely on the even illumination provided by light tables to accurately interpret diagnostic images.

Cartography

Cartographers use light tables to overlay maps and make precise adjustments to geographic data. This is particularly useful in the creation of topographic maps and other detailed cartographic products.

Animation

In traditional animation, light tables are used by animators to trace and align successive frames of animation. This process, known as onion skinning, allows animators to create smooth, fluid motion in their animations.

Advantages

The primary advantage of a light table is its ability to provide consistent, even lighting across a surface, which is crucial for accurately viewing and working with transparent materials. This uniform illumination helps reduce eye strain and allows for more precise work.

Related Pages

• Lightbox
• Tracing paper
• Photography
• Graphic design
• Medical imaging

A crewman examining TARPS imagery on a light table