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Elements of an inexpensive 28mm lens
Elements of an inexpensive 28mm lens
Photographic lens cut for demonstration
Photographic lens cut for demonstration
Diagram of Petzval's 1841 portrait lens - crown glass shaded pink, flint glass shaded blue
Diagram of Petzval's 1841 portrait lens - crown glass shaded pink, flint glass shaded blue
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Leica Camera (1950s)
Leica Camera (1950s)
Hasselblad 500 C/M with Zeiss lens
Hasselblad 500 C/M with Zeiss lens
Different apertures of a 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 cont
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.