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Classic cameras - Weston Master II exposure meter
Classic cameras prior to the 1950’s did not have exposure meters built into them. To meet this need as well as the high standards required by professional photographers, in 1945 Sangamo Weston began manufacturing highly accurate selenium celled exposure meters in the USA and in 1952 in the U.K. Production of the superb Weston Master II began in 1946 with the model number of S141/735.
The meter had two sensitivity ranges, one for bright light the other for low light. Low light sensitivity was selected by opening a perforated lid revealed more of the sensor, an action which automatically altered the light value measurement scale. Because ASA and ISO film emulsion speeds were not then established, Weston had its own emulsion speed system which later required slight alteration to be equivalent to ISO ratings.
Shown is a British made Weston resting on its Invercone (incident light measurement cone) which clipped over the sensor and dates from 1948. Weston Master II meters are almost indestructible and many are still in use today by owners of classic cameras.
Weston, the worlds most respected exposure meter.
Classic cameras - Weston Master II exposure meter
Classic cameras prior to the 1950’s did not have exposure meters built into them. To meet this need as well as the high standards required by professional photographers, in 1945 Sangamo Weston began manufacturing highly accurate selenium celled exposure meters in the USA and in 1952 in the U.K. Production of the superb Weston Master II began in 1946 with the model number of S141/735.
The meter had two sensitivity ranges, one for bright light the other for low light. Low light sensitivity was selected by opening a perforated lid revealed more of the sensor, an action which automatically altered the light value measurement scale. Because ASA and ISO film emulsion speeds were not then established, Weston had its own emulsion speed system which later required slight alteration to be equivalent to ISO ratings.
Shown is a British made Weston resting on its Invercone (incident light measurement cone) which clipped over the sensor and dates from 1948. Weston Master II meters are almost indestructible and many are still in use today by owners of classic cameras.
Weston, the worlds most respected exposure meter.