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

135 Film (35mm Still Film / ISO 1007) vs. 4×5 Large Format Sheet Film

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

Comparing:
135 Film (35mm Still Film / ISO 1007)
4×5 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 →

4×5 Sheet Film (standardized under ISO 1010) is the benchmark large format photographic film standard, measuring exactly 3.90 × 4.90 inches (99.0 × 124.5 mm nominal for 4×5 inch film holders) with a massive 12,325 mm² active negative area (~14.3× larger than 35mm full frame). Loaded individually into dual-sided dark slides, it features edge notch codes for emulsion identification in total darkness.

View full 4×5 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
— 3.90 × 4.90 in (99.0 × 124.5 mm ± 0.5 mm — sized to fit standard 4×5 film holders)
Active Negative Surface Area
— Approx. 12,325 mm² (~14.26× the area of 35mm full frame)
Sheet Loading System
— Loaded individually in dual-sided Fidelity Elite / Toyo 4×5 film holders inside a darkroom or changing tent
Edge Notch Code System
— Die-cut triangular/curved notches in upper right corner identify film emulsion type and indicate light-sensitive side
Camera Systems
— View cameras (Linhof Master Technika, Sinar P2, Wista 45, Chamonix 45F-2, Intrepid 4x5)
Perspective Control
— Full independent Scheimpflug plane-of-focus tilts, swings, rises, and shifts on view camera standards