is a process of printing directly from positive transparencies. It is now known as Ilfochrome.

is the information embedded into a digital image file which helps to ensure colour consistency across different mediums, such as on a screen and in the printed form.

is a colour photographic print made on negative colour paper which has at least three layers of light-sensitive silver salts. It is the most common type of traditional colour print.

is the number given to the chemical process for developing colour negative film. Kodak coined the term but it was universally adopted by every other manufacturer.

is an early photographic technique that gives a cyan blue print. It uses paper coated in soluble light sensitive salts which when exposed to ultraviolet light (often sunlight) turns blue and insoluble. Unexposed salts dissolve away when the paper is washed leaving an image. This is the process that gave the engineering "blueprint" [..]

is an early direct photographic technique that does not use a negative. The process creates a highly detailed negative image on a polished sheet of copper coated with a thin layer of silver. When processed and held up to the light the copper plate reflects so creating a positive impression. As no negative is produced each exposure creates a unique [..]

is the range that is also in focus on either side of the actual point of focus. The smaller the aperture of the lens, the greater the depth of this focus. The focal length of the lens is also important, a shorter (or wider) lens has a greater depth of field than a longer lens at the equivalent aperture.

is when two images are placed horizontally next to each other to create a new work.

is a collapsible large format camera that is often made of wood. It is the traditional type of view camera where the photographer focuses under a cloth and allows camera movements that enable the photographer to move the film and lens planes independently. (See entry on Scheimpflug principle

is the line that is in focus across an image. It can be imagined as like a piece of glass that connects every point that is in focus.