Kodak Tri-X Reversal 7266: Shooting B&W 16mm Film

By WALKENS House of Film | Published: 2026-11-03

Category: Guias Práticos

A practical, step-by-step guide to shooting 16mm black and white film with Kodak Tri-X Reversal 7266, from exposure and processing to handling a 400ft reel.

Quick answer

Treat Kodak Tri-X Reversal 7266 as a high-speed black-and-white reversal stock: expose it for the contrast you want, process it as reversal to get a positive image, and plan your 400ft reel around short test rolls before committing to a full shoot.

Why reversal changes your shooting decisions

Tri-X Reversal 7266 is designed to be processed as a reversal film, which gives you a positive image on the film itself rather than a negative. That matters on set because you are committing to a finished look in-camera, not a negative you can later grade in either direction. The film's rich blacks and excellent contrast, as supplied in the catalog, mean highlights and shadows land where you place them, so exposure errors are harder to rescue than with a negative stock.

The practical consequence is that you should decide your contrast strategy before you roll: light for the shadows you want to keep, and let the film's natural contrast handle the rest. If you need a flatter, more forgiving image, Tri-X Reversal is the wrong tool; choose a negative stock instead. If you want a punchy, finished black-and-white look straight from the lab, this is the stock to build your shoot around.

Handling a 400ft reel without wasting footage

A 400ft reel is a lot of film for a first test, and Tri-X Reversal is not a stock you want to learn on with a full roll. The catalog lists the 400ft reel as sealed in a can with single perforation, so check your camera's sprocket compatibility before you load. Single-perf film will not run correctly in a camera that expects double-perf stock, and forcing it can damage both film and transport.

Break the reel into shorter loads for tests and critical scenes, and keep the rest sealed until you need it. Fresh stock from Kodak is part of the value here, so protect it from heat and light between shoots rather than leaving a partly used reel on a shelf.

Step-by-step: shooting Tri-X Reversal 7266

Confirm camera and perforation compatibility: Check that your 16mm camera accepts single-perforation film and can handle a 400ft reel or that you can break it down into smaller loads. Common mistake: assuming all 16mm stock is double-perf and loading a single-perf reel into a camera that will not transport it correctly. Test the transport with a short load before committing a full scene to the reel.
Choose your exposure strategy for reversal: Decide where you want your shadows and highlights before you roll. Because reversal gives a positive image, expose for the detail you must keep and let the film's contrast do the rest. Common mistake: exposing as if you were shooting a negative and expecting to fix contrast later. If you need a flatter, more forgiving image, switch to a negative stock rather than fighting Tri-X Reversal.
Shoot a short test roll first: Load a short length from the 400ft reel and shoot a representative scene under the lighting you plan to use. Process it as reversal and review the result before shooting the rest. Common mistake: shooting an entire 400ft reel before seeing how the stock handles your lighting and lab. Keep the test roll's notes with the processed footage so you can repeat what worked.
Label and store the remaining reel: Reseal unused film in its can, label it with the shoot date and exposure notes, and store it away from heat and light. Common mistake: leaving a partly used reel exposed on a shelf between shoots. Treat fresh Kodak stock as a perishable resource and track how much you have left before the next shoot.
Send the film to a lab that processes reversal: Confirm with your lab that they process Kodak Tri-X Reversal 7266 as a reversal film and ask about turnaround before you shoot. Common mistake: sending reversal stock to a lab that only handles negative processing. Get the lab's reversal confirmation in writing before the shoot day.

Product facts

Kodak Tri-X Reversal #7266 - 400ft 16mm Film: Kodak Tri-X Reversal 7266 is a high-speed, panchromatic black-and-white film with fine grain and sharpness, supplied as a 400ft reel sealed in a can with single perforation. The speed and contrast suit interior artificial light and daylight work, while the single-perf 400ft format means you should confirm camera compatibility and plan shorter loads before shooting.
Kodak Tri-X Reversal #7266 - 400ft 16mm Film