# item.guide
Side-by-Side Comparison Film Formats

135 Film (35mm Still Film / ISO 1007) vs. 8×10 Ultra-Large Format Sheet Film

Comparing 2 standards across 13 specifications. 13 key differences identified.

Comparing:
135 Film (35mm Still Film / ISO 1007)
8×10 Ultra-Large Format Sheet Film

135 Film (standardized under ISO 1007) is the most popular photographic film format in history, consisting of a 35.0 mm wide cellulose acetate or polyester strip with standard KS-1870 sprocket perforations housed in a light-tight metal cassette. Capturing standard 36 × 24 mm frames in 24 or 36 exposure lengths, it utilizes electrical DX-barcode contacts to auto-set ISO speed and exposure latitude.

View full 135 Film (35mm Still Film / ISO 1007) spec sheet →

8×10 Sheet Film (standardized under ISO 1010) is the pinnacle of ultra-large format analog photography, measuring 7.90 × 9.90 inches (200.5 × 251.5 mm nominal) with a gargantuan 50,425 mm² negative surface area (~58.4× larger than 35mm full frame). Famous for direct contact printing with zero enlargement grain in platinum/palladium and silver gelatin printing.

View full 8×10 Ultra-Large Format Sheet Film spec sheet →

Specification Comparison Table

13 Parameters
Parameter / Spec
Film Strip Width
35.00 ± 0.05 mm (1.378 in) —
Nominal Image Frame Size
36.0 × 24.0 mm (standard 3:2 aspect ratio) —
Perforation Standard
KS-1870 (Kodak Standard) rectangular perforations (4.75 mm pitch along both edges) —
Standard Exposures per Roll
24 or 36 exposures (approx. 115 cm and 165 cm total strip lengths) —
DX-Code Electrical Grid
12-contact checkerboard grid on metal cassette (encodes ISO 25 to 5000, frame count, exposure latitude) —
Spool Core Diameter
Standard 11.0 mm plastic center spool with slot tab for loading —
Legendary Cameras
Leica M3/M6, Nikon F3/FM2, Canon AE-1, Olympus OM-1, Contax T2 —
Nominal Sheet Dimensions
— 7.90 × 9.90 in (200.5 × 251.5 mm ± 0.8 mm)
Active Negative Area
— Approx. 50,425 mm² (~58.36× the surface area of 35mm full frame)
Contact Printing Standard
— Negatives are contact-printed 1:1 directly onto silver gelatin or platinum/palladium paper without an enlarger lens
Resolution Potential
— Estimated 300 to 500+ megapixels equivalent resolving power under fine-grain developer
Legendary Practitioners
— Ansel Adams (Group f/64), Edward Weston, Nicholas Nixon, Alec Soth
Camera Systems
— Deardorff 8×10, Sinar 8×10, Wisner 8×10, Chamonix 810V, Canham 8×10