Overexposure

The technical description is a picture where all the tones are squashed into the brighter end of the tonal scale and where the highlights may be completely ‘clipped‘ (lost). The artistic description is a photo that’s lighter than the photographer...

Exposure latitude

A term used to describe a film’s tolerance to overexposure and underexposure and its ability to capture tones in the brightest and darkest parts of a scene, even in high-contrast lighting. The modern-day equivalent with digital sensors is dynamic range, though...

Zone System

A system developed by the great landscape photographer Ansel Adams for measuring the light levels throughout a scene and allocating them to ten brightness ‘zones’. The idea was to develop the film to a specific level of contrast that captured the full...

Warmth

A non-technical way of describing the colour temperature of the light in a scene. Pictures taken with a low sun have ‘warmth’ because the light takes on a golden colour. Many photographs – landscapes, for example – can be enhanced with a little additional...