Quick answer
Kodak Portra 400 4x5 is a versatile color negative film that rewards accurate exposure and consistent processing. Meter for the shadows, develop at box speed, and expect warm, natural skin tones with fine grain.
Why Portra 400 is a favorite for large format
Portra 400 is a daylight-balanced color negative film with an ISO of 400, which makes it suitable for a wide range of lighting conditions. Its fine grain and excellent color saturation are especially appreciated in 4x5 sheet film, where enlargements or scans can reveal every detail.
The film is known for its forgiving exposure latitude: you can overexpose by one or two stops and still get usable negatives, though color shifts may occur. Underexposure is less forgiving and can lead to muddy shadows.
Important considerations when buying 4x5 sheet film
Sheet film has a limited shelf life, especially after the expiration date. The freshest available stock of Kodak Portra 400 4x5 currently has a September 2026 expiry, so plan your shooting accordingly. All sheet film at WALKENS House of Film is fridge-stored to preserve quality.
Because 4x5 film is sold as-is, inspect each sheet before loading. Store unexposed film in a cool, dry place and develop soon after exposure for best results.
Frequently asked questions
What ISO should I rate Portra 400 4x5 at?
Rate at box speed (ISO 400) for standard results. Overexposing by 1/3 to 1 stop (ISO 320–200) can reduce contrast and enhance shadow detail, but expect slightly warmer colors. Underexposure (ISO 800 or higher) increases contrast and color shifts. Start at ISO 400 and adjust based on your desired contrast and color palette.
How do I meter for Portra 400 in large format?
Use a spot meter to read the shadows where you want detail, then place those shadows 2–3 stops below middle gray. Alternatively, meter an 18% gray card or the palm of your hand (open one stop for palm). For consistent results, bracket your exposures on the first few sheets.
Does Portra 400 4x5 require reciprocity compensation?
For exposure times between 1/1000 and 1 second, no compensation is needed. For exposures of 1 to 10 seconds, add 1/3 stop. For 10 to 100 seconds, add 1/2 stop. Beyond 100 seconds, add 1 stop. Color shifts may occur with long exposures; test first. Keep a reciprocity chart in your kit if you shoot long exposures.
How should I store and handle 4x5 sheet film?
Store unopened boxes in a refrigerator at 40–55°F (4–13°C). Let the film warm to room temperature for at least 2 hours before opening to prevent condensation. Load holders in a clean, dark environment. After exposure, develop as soon as possible or return to the fridge in a sealed bag. Always warm film before opening to avoid moisture spots.
What developer should I use for Portra 400 4x5?
Portra 400 is designed for C-41 process. Use a standard C-41 kit at 102°F (39°C) for 3.5 minutes. For black and white processing, use a developer like Kodak D-76 or Ilford ID-11 at 1:1 dilution, but expect different color rendition (the film will be processed as black and white, losing its color layers). For color results, stick to C-41 chemistry.
Product facts
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Kodak Portra 400 4x5 - 10 Sheets (EXP: 09/26): At true ISO 400 speed, this film delivers spectacular skin tones plus exceptional colour saturation over a wide range of lighting conditions. You can rely on consistent color and exposure across different scenes, making it a great choice for portraits and environmental work.
Kodak Portra 400 4x5 - 10 Sheets (EXP: 09/26)
