Through-the-lens metering finder couples to lens apertures and shutter speeds for open aperture or stopped-down manual metering. Meter needle visible through viewfinder eyepiece, GPD cells take average reading off camera's focusing screen.
Includes shutter Dial Adapter.
EV Range: EV 2.5-19 (w/ISO 100 & 105/2.4 lens)
Manual ISO Settings: ISO 12-3200
Aperture/Speed Range: f/2-22 / 15-1/1000 (w/ISO 100)
Power Source: 6 volt battery in camera
% of Image Area Visible: 90%