KODAK PROFESSIONAL PORTRA 400 - Technical Data - Color Negative Film - February 2016 - E-4050

Oct 12, 2026

KODAK PROFESSIONAL PORTRA 400 provides technical guidance for a high-speed ISO 400 color negative film, emphasizing fine grain and high saturation with exceptional skin tones across varied lighting. The document details film technology benefits, available sizes and formats, and precise storage and handling requirements to maintain consistency. It also covers darkroom recommendations, exposure speed use with filters, exposure tables for daylight and flash, and calculation methods for long/short and flash exposures, plus guidance for fluorescent and high-intensity discharge lighting.

LanguageEnglish

CategoryForms

FormatPDF

Pages4

Reading Time2 min

AccessFree to download

Storage and Handling

Darkroom Recommendations

Exposure

Film Speed

Daylight Exposure

Adjustments for Long and Short Exposures

Electronic Flash

Fluorescent and High-Intensity Discharge Lamps

KODAK PROFESSIONAL PORTRA 400 Film TECHNICAL DATA / COLOR NEGATIVE FILM February 2016 • E-4050 KODAK PROFESSIONAL PORTRA 400 is the world's finest grain high-speed color negative film. At true ISO 400 speed, this film delivers spectacular skin tones plus exceptional color saturation over a wide range of lighting conditions. PORTRA 400 Film is the ideal choice for portrait and fashion photography, as well as for nature, travel and outdoor photography, where the action is fast orthe lighting can't be controlled. TECHNOLOGY BENEFIT | •
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• | Incorporates Entertainment Imaging’s KODAK VISION Film Technology
Antenna Dye Sensitization in cyan and magenta emulsion layers
KODAK Proprietary Targeted Advanced Development Accelerators
Micro-Structure Optimized KODAK T-GRAIN Emulsions | •
•• | World’s finest-grain 400-speed color negative film
Ideal for scanning Extraordinary enlargement capability from a 35 mm negative | | --- | --- | --- | --- | | • | Optimized Emulsion Spectral Sensitivity and Image Modifier Chemistry | • | Beautiful, natural skin tonesand superb color reproduction | | • | KODAK Proprietary DIR Couplers | •• | Optimized sharpness Distinct edges, fine detail | • Unified Film Emulsion Technology • Printing compatible with other KODAK Films SIZES AVAILABLE Availability may differ from country to country. See your dealer who supplies KODAK PROFESSIONAL Products. | Size/Format | Code | Base | | --- | --- | --- | | 135 | 5056 | 0.13 mm (0 .005 inch) acetate | | 120 | 6056 | 0.11 mm (0 . 004 inch) acetate | | Sheets | 4056
| 0.19 mm (0 . 007 inch) ESTAR Thick | STORAGE AND HANDLING Store unexposed film at 21°C (70° F) or lower in the original sealed package. For extended periods, store film at 13°C(55° F) to preserve consistency. To avoid moisture condensation on film that has been refrigerated, allow the film to warm up to room temperature before opening the package. Typical warm-up times are given in the table below. | Size | Warm-Up Times (Hours) to Reach Room Temperature of 21°C (70°F) From a Storage Temperature of: | | | | --- | --- | --- | --- | | | -18°C (0°F) | 2°C (35°F) | 13°C (55°F) | | 120 | 1 | 3⁄4 | 1⁄2 | | 135 magazine | 11⁄2 | 11⁄4 | 1 | | 10-sheet box | 11⁄2 | 1 | 1 | Load and unload roll-film cameras in subdued light. Total darkness is required when you load and unload sheet film holders. Process film as soon as possible after exposure. Protect negatives from strong light, and store them in a cool, dry place. For long-term storage, keep negatives at a temperature between 2°C (35° F) and 13°C (55° F) and at a relative humidity between 30 and 35 percent. DARKROOM RECOMMENDATIONS Do not use a safelight. Handle unprocessed film in total darkness. EXPOSURE Film Speed Use the speed numbers in the tables below with cameras or meters marked for ISO, ASA, or DIN speeds or exposure indexes (EIs) . Do not change the film-speed setting when metering through a filter. Metering through filters may affect light meter accuracy; see your meter or camera manual for specific information. For critical work, make a series of test exposures. | Light Source | KODAK
WRATTEN
Gelatin Filter* | ISO Speed | | --- | --- | --- | | Daylight or Electronic Flash | None | 400 | | Photolamp (3400 K) | No. 80B | 125 | | Tungsten (3200 K) | No. 80A | 100 | * For best results without special printing. © 2016 Kodak Alaris Inc. Daylight Use the exposures in the table below for average frontlit subjects from 2 hours after sunrise to 2 hours before sunset. | Lighting Conditions | Shutter Speed (second) and Lens Opening | | --- | --- | | Bright or Hazy Sun on Light Sand or Snow | 1/500
f/16 | | Bright or Hazy Sun (Distinct Shadows) | 1/500
f/11* | | Weak, Hazy Sun
(Soft Shadows) | 1/500
f/8 | | Cloudy Bright
(No Shadows) | 1/500
f/5.6 | | Heavy Overcast or Open Shade‡ | 1/500
f/4 | * Use f/5 .6 for backlit close-up subjects. ‡ Subject

FAQs

What storage temperature does the film recommend for unexposed KODAK PROFESSIONAL PORTRA 400?

Store unexposed film at 21°C (70°F) or lower in the original sealed package. For extended periods, store at 13°C (55°F) to preserve consistency.

How should the film be prepared after refrigeration before opening the package?

Allow the film to warm up to room temperature before opening to avoid moisture condensation on the film.

What are the recommended exposure speed settings for this film?

Use the speed numbers in the tables with cameras/meters marked for ISO, ASA, or DIN, and do not change the film-speed setting when metering through a filter.

Oct 12, 2026

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