sheetfilm

Sheetfilm is photographic film supplied in flat sheets, used primarily with large-format cameras. Unlike roll film, sheetfilm is loaded into light-tight holders and exposed one sheet at a time, typically in the field. The most common formats are 4x5 inches (9.8x12.7 cm), 5x7 inches (12.7x17.8 cm), and 8x10 inches (20.3x25.4 cm); other sizes exist.

Exposed sheets are processed in trays or tanks, often in a darkroom or changing bag. Emulsions come in black-and-white, color negative, and color reversal (slide) varieties, with infrared options for specialized work. Black-and-white sheets are developed with conventional developers; color sheet films follow standard C-41 (negative) or E-6 (slide) processes.

The format offers high resolution, wide tonal range, and the ability to exploit camera movements such as rise, tilt, and shift, yielding precise control over perspective and depth of field. The drawbacks include higher cost per image, slow shooting pace, greater equipment bulk, and more intensive handling requirements.

Today, sheetfilm remains a niche choice among landscape, architectural, and studio photographers. It continues to be manufactured by several suppliers and supported by labs and adapter equipment. Many practitioners digitize their images for post-production, while preserving the original negatives for archival quality, which also requires careful storage in cool, dry conditions.