Arthur Payne has written:

'Practical orthochromatic photography' -- subject(s): Orthochromatic Photography, Photography, Orthochromatic

'A colour-sensitive collodion process'

Panchromatic and Orthochromatic

Orthochromatic, panchromatic, infra-red and x-ray.

August Sander used a large format Plaubel plate camera (13 x 18 cm) with Zeiss lenses and orthochromatic plates with light filter. He may have used other cameras, but his body of work was created with large format cameras.

there are three commonly types of safelights used;

1: Red safelight for orthochromatic films

2: Yellow safelight for monochromatic films

3: Amber or total dark safelight for panchromatic films

Mkoloma S.S

Radiographer technologist-Ocean Road Cancer Institute, Dar es Salaam

Tutor, school of Radiography- Muhimbili University of Allied and Health sciences (MUHAS),Dar es Salaam, Tanzania