Stop bath - the book said he could make that from vinegar if necessary, but a safelight?

A safelight, fixer and developer - these were things he could only get from a supplier.

With each reel secured in a small processing tank, I'm able to turn the safelight back on.

When making black-and-white prints, a safelight is commonly used to illuminate the work area.

A safelight is a light source suitable for use in a photographic darkroom.

I turn off my safelight and, in complete darkness, load the rolls of film onto developing reels.

For such a slim and unassuming book, "Safelight" tells a surprisingly potent story.

The film was tinted amber, the color of the safelight on film printers.

This allows the film to be handled under a (usually red) safelight, instead of in total darkness like most photographic film.

Today modern darkrooms usually use an amber safelight.

They used a battery-powered flashlight covered with red cloth as a safelight, and a lens filter made from old sunglasses.

On went the safelight, and there before me was a uniformly chalky, featureless strip of sopping-wet film.

Peter turned out the amber light, then turned on the safelight, a small, glowing, red bulb which would not expose the printing paper.

As soon as the port light showed safelight, Green threw the dogs on the door, spun the wheel and pulled open the door.

He began "Safelight" that year.

Safelight (for use in a darkroom)

Mr. Burke said "Safelight" was not autobiographical.

Orthochromatic photography refers to a photographic emulsion that is sensitive to only blue and green light, and thus can be processed with a red safelight.

Orthochromatic papers and films are also sensitive to yellow light and must be used only with a deep red safelight, not with an amber one.

Red illumination was (and sometimes still is) used as a safelight while working in a darkroom as it does not expose most photographic paper and some films.

In the darkroom he wound film onto the spool for developing and, after a few minutes, found himself enjoying the quiet, dim atmosphere under the glow of the safelight.

While the development was well underway, Baer briefly checked his highlight densities with a dim green safelight and continued development until he obtained his desired densities.

I uncovered this unusual characteristic of the film the first time it was used, since I regularly rely on a dim green safelight to tell me when enough development is enough.

In traditional black-and-white photographic printing, photographic papers normally are handled under an amber or red safelight, as such papers typically are sensitive only to blue and green light.

Former @stake academy instructors Rob Cheyne and Paul Hinkle later formed the information security training company "Safelight Security Advisors" in 2007.