page_title: Nikon FG
section_title: Exposure Control and Metering
hierarchical_section_title: Nikon FG / Body and Design / Exposure Control and Metering
caption_attribution_description: English: Nikon FG shutter dial - 1s, M90 and B settings concealed by film winder arm
context_page_description: The Nikon FG is an interchangeable lens, 35 mm film, single-lens reflex camera. It was manufactured by Nippon Kogaku K. K. in Japan from 1982 to 1986.
  The FG was the successor to the Nikon EM camera of 1979 and the predecessor of the Nikon FG-20 of 1984. These three cameras comprised Nikon's first family of ultra compact 35mm SLR camera bodies. Although the FG had a much less advanced shutter than the more expensive Nikons of the day, it had a very sophisticated electronic design compared to earlier electromechanical Nikons.
context_section_description: The FG's metering system is controlled by a micro-computer which measures center-weighted brightness, using a sensitive silicon photodiode (SPD) sensor. The metering system performs 'instant stop down metering', where the meter reading is taken after the lens is stopped down but before the mirror flips up and the shutter opens.
  In 'P' (Programmed AE) mode, the micro-computer calculates stepless aperture (f/stop) and stepless shutter speed using pre-programmed values.
  In 'A' (Aperture Priority AE) mode, the micro-computer calculates a stepless shutter speed for a given user-selected aperture value.
  In 'M' (Manual Exposure Control) mode, the user selects both aperture and shutter speed, and the metering system provides a suggested shutter speed (indicated in the viewfinder) for the selected aperture.
caption: Nikon FG exposure mode and shutter speed dial
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