The reciprocal of exposure time in seconds is often used for engraving shutter settings, etc.; for example a marking of 250 "denotes 1/250".
For example, a marking of 250 "denotes 1/250". The reciprocal of exposure time in seconds is often used for engraving shutter settings.
The reciprocal of exposure time in seconds is often used for engraving shutter settings. For example, a marking of 250 "denotes 1/250".
The reciprocal of exposure time in seconds is often used for engraving shutter settings. For example, a marking of 250 "denotes 1/250".