Measuring System Digital exposure meter for ambient and flash light; 2-Silicon photo diodes (incident and reflected) Measuring Modes Incident and reflected light Receptor Head Rotating; Convertible to flat diffuser (Lumisphere in down position); 3.3' to infinity (1m to infinity); 1° spot with display in finder Aperture/Shutter Priority Aperture priority metering, Shutter priority metering, EV meteringWith synchro cord (cumulative and non-cumulative), Without synchro cord (cumulative and non-cumulative)Measurement with built-in wireless flash triggering radio triggering system (cumulative and non-cumulative) Display Readout U (underexposure) or O (overexposure) indicationAuto illumination: EV 6 and under (custom setting function);Diopter adjustment: -2.5 to 1.0d ISO Range Second ISO film speed setting: ISO 3 to 8000 (in 1/3 stop) f/Stop Display Range Ambient LightIncident light: -2 to 22.9EVReflected light: 1 to 24.4EV with 1° spot viewfinderRepeat Accuracy: +/- 0.1 EV or less FlashIncident light: f/0.5- f/161.2 (approx. f/175)Reflected light: f/2.0 to f/161.2 (approx. f/175) with 1° spot viewfinder Aperture:f/0.5 to f/161.2 (in 1, 1/2 or 1/3 stop) Analog Scale:Aperture:f/1.0 to f/128 (in 1/2 stop)Shutter speed: 4 seconds to 1/4000 second (in 1/2 stop) Shutter Speed - Ambient Ambient light: 30 minutes to 1/8000 seconds (in 1, 1/2 or 1/3 stop) plus 1/200, 1/400 Shutter Speed - Flash Flash: 30 minutes to 1/1000 second (in 1, 1/2 or 1/3 stop) plus 1/75, 1/80, 1/90, 1/100, 1/200, 1/400 EV Range (ISO-100) -9.9 to 46.6EV (in 1/10 stop) Cine Speeds 2, 3, 4, 6, 8, 12, 16, 18, 24, 25, 30, 32, 36, 40, 48, 50, 60, 64, 72, 96, 120, 128, 150, 200, 240, 256, 300, 360 frames per second (at a 180° shutter angle) Exposure Memory 9 readings on analog scale (f/stop and shutter speed) with memory recall and clear feature Shadow/Highlight Calculation Yes Brightness Difference +/- 9.9 EV (in 1/10 stop) Flash to Ambient Ratio 0 to 100% in 10% increments Multiple Flash Unlimited flash readings (only one digit is displayed when the cumulative number is ten or more)Up to 9 readings can be averaged Power Source One CR123A battery (3V Lithium dry cell); 60 hours; With 3 level status icon;Auto Power Off: 20 minutes after last use (10, 5 or no shut off in custom setting mode)Operating temperatures: 14 to 122°F (-10 to 50°C)Storage Temperature: -4 to 140°F (-20 to 60°C) Weight 9.5 oz (268 gm) with battery Exposure Calibration +/- 9.9 EV (in 1/10 stop)Calibration compensation: +/- 1.0 EV (in 1/10 stop) Specialties Built-in radio transmitter moduleJIS standard water resistance class 4, splash-proof type1/4" tripod socket for placing meter in subject area for cordless flash measuring |