Kelvin – is a colour temperature measurement informing the colour of light. E.g. Daylight is 5500OK (Kelvins) and this gives a pure white light whereas a sunset will be around 3200K which will give a warmer, orange light. Used mainly in the white balance settings of your camera.

Key Light – The key light is the primary light source in a photographic or cinematic lighting setup, positioned to illuminate the subject and provide the main source of illumination. The key light establishes the direction, intensity, and quality of light falling on the subject, shaping the overall look and mood of the image.

Kit Lens – A kit lens refers to the standard zoom lens typically sold as part of a camera kit package with entry-level or consumer-grade digital cameras. Kit lenses are versatile, general-purpose lenses designed to cover a range of focal lengths, from wide-angle to moderate telephoto, and are commonly used for everyday photography applications.

Kodak – Kodak, short for Eastman Kodak Company, is a historic American photography and imaging company founded by George Eastman in 1888. Kodak was a pioneer in the development of photographic film, cameras, and related products, and became synonymous with popularizing photography as a mainstream hobby and industry.

Kodachrome – Kodachrome is a colour reversal film introduced by Kodak in 1935, known for its vibrant colours, sharpness, and archival stability. Kodachrome was widely used for professional and amateur photography until its discontinuation in 2009, due to the complex and environmentally hazardous processing required. Kodachrome remains iconic for its distinctive colour reproduction and nostalgic appeal.

Kallitype – Kallitype is an alternative photographic printing process that produces rich, brown-toned prints using iron salts and silver nitrate. Kallitype prints are created by coating paper with a light-sensitive emulsion containing a solution of ferric oxalate and silver nitrate, exposing the coated paper to ultraviolet light through a negative, and processing the print in a series of chemical baths to develop and fix the image.