Overview
ISO 1008:1992 - Photography - Paper dimensions - Pictorial sheets defines nominal sizes, cutting dimensions and tolerances for photographic papers in sheets (black-and-white and color) intended for general pictorial use. The standard also specifies a method to check squareness and edge straightness, rules for measurement conditions and labeling requirements for packaging. Metric units are mandatory and dimensions are referenced to standardized atmospheric conditions (23 ± 2 °C, 50 ± 5 % RH).
Key topics and technical requirements
- Nominal sizes and preferred formats: the standard lists a series of metric sheet sizes (examples include 89 × 127 mm, 105 × 148 mm (ISO A6), 127 × 178 mm, 178 × 240 mm, 210 × 297 mm, 305 × 406 mm, 406 × 508 mm, 508 × 610 mm).
- Cutting rules and tolerances: ISO 1008 specifies cutting dimensions and tolerances for the preferred formats and for newly defined metric sizes (tabulated in the standard).
- Squareness and straightness test: verification is performed by comparing a sheet against two perfect rectangles - one at the minimum specified dimensions and one at the maximum - with the requirement that no point of the sheet perimeter falls inside the smaller rectangle or outside the larger.
- Measurement conditions: dimensions and tolerances apply at the moment of cutting and for measurements made after conditioning at the standard atmosphere (23 ± 2 °C and 50 ± 5 % RH), per ISO 554.
- Dimensional stability (informative): paper dimensions can change with humidity and age. For non‑plasticized papers, dimensional variation can reach about 0.3% for a 10% RH change. On opening a properly conditioned package, dimensional differences should not exceed ±0.20% relative to cut dimensions. Recommended conditioning times are noted (e.g., typically 8 hours for non‑plasticized paper, longer for plasticized products).
- Labeling requirements: packaging should include product name/format, manufacturer name, catalogue ID, unit count, emulsion/roll axis number (where applicable), expiry or control code, recommended safelight and storage conditions. Products conforming to the standard may be labeled “CONFORME A L’ISO 1008”.
Applications and users
ISO 1008 is directly relevant to:
- Photographic paper manufacturers and converters (quality control, production tolerances)
- Photographic labs and printshops (acceptance testing, handling)
- Equipment suppliers and paper distributors (packaging and labeling)
- Archivists, museums and procurement teams specifying pictorial photographic paper
- Standards and compliance teams ensuring consistency across international markets
Related standards
- ISO 1:1975 (reference temperature for measurements)
- ISO 554:1976 (standard atmospheres for conditioning and testing)
- ISO 6221:1991 (conditioning times for films and papers)
- ISO 1008:1973 and ISO 1010:1973 (earlier editions consolidated into ISO 1008:1992)
Keywords: ISO 1008, photographic paper dimensions, pictorial sheets, cutting tolerances, squareness test, dimensional stability, paper labeling.
