Definition

Noun: A standard size for a photographic plate or film, measuring approximately 3.25 inches by 4.25 inches (about 8.3 cm by 10.8 cm). This term specifically refers to the physical medium used in early and historical photography.

Usage

The term "quarter plate" is used to specify the dimensions of a photographic plate, primarily in the context of describing camera formats, historical photographic equipment, or the size of vintage photographs.

Examples

• The antique camera in the museum was designed to use a quarter plate.
• The collection includes several portraits developed on quarter plate glass negatives.
• This camera back accepts quarter plate film holders.

Advanced Usage

• The term is largely historical and technical, most commonly encountered in discussions of 19th and early 20th-century photography, camera collecting, and archival work.
• It can be used attributively (as a noun modifier) to describe related equipment, e.g., "a quarter plate camera," "quarter plate holders."

Variants and Related Words

• Half plate: A larger photographic plate size, typically measuring approximately 4.75 inches by 6.5 inches.
• Full plate: An even larger standard photographic plate size, typically measuring approximately 6.5 inches by 8.5 inches.
• Plate camera: A type of camera designed to use photographic plates.

Synonyms

• 3¼" x 4¼" plate: A direct, descriptive synonym specifying the exact measurements.
• (Historical) film format: A broader, more general term that could encompass this size.

Notes on Meaning

This term has a single, precise technical meaning related to historical photography. It is not used in general modern language and does not refer to a quarter of a dinner plate or any other common object.

Noun

1. a photographic plate measuring 3.25 inches by 4.25 inches