Camera
Videos
A camera is an instrument used to capture and store images and videos, either digitally via an electronic image sensor, or chemically via a light-sensitive material such as photographic film. As a piv
Leica camera (1950s)
Hasselblad 500 C/M with Zeiss lens
Different apertures of a lens
The distance range in which objects appear clear and sharp, called depth of field, can be adjusted by many cameras. This allows a photographer to control which objects appear in focus, and which do not.
Photographic lens design
Videos
The design of photographic lenses for use in still or cine cameras is intended to produce a lens that yields the most acceptable rendition of the subject being photographed within a range of constrain
Elements of an inexpensive 28mm lens
Photographic lens cut for demonstration
Diagram of Petzval's 1841 portrait lens - crown glass shaded pink, flint glass shaded blue