The Sekonic L-758DR DigitalMaster is the world's first multi-function light meter that can be programmed to match and be calibrated to the sensitivity of your digital camera sensor or type of film for perfect exposure control. They have produced an incredible meter that more than meets the needs of the photographic community. This full-featured meter will definitely make everyone happy as it is loaded with every imaginable feature - and then some...Expanding o...n the unqualified success of the L-558R, Sekonic has taken the next step and designed a meter that offers advanced features such as Spot/Incident measurement modes, flash/ambient measurements, flash analyzing, built-in PocketWizard wireless triggering, plus Exposure Profiling, Pre-Exposure warning, 14 selectable custom settings, and much more. This weather-resistant meter not only meets the needs of the digital community but can also serve the cinema community. The L-758Cine model will have expanded cine speed (fps) 1 thru 1000, Lux 0.63 to 190, 000, Foot-Candle 0.10 to 180, 000, Cd/m to 190, 000, Foot-Lambert 0.07 to 190, 000 and Preset filter compensation values (including Kodak Wratten filter number)The L-758DR measures light beyond the capabilities of your camera and ensure repeatable accurate and consistent measurements. In addition, the dynamic range of a particular digital camera or film can be stored, recalled and displayed. Using the USB transfer cable (included) and the Sekonic Digital Input and Transfer software (included), a digital camera or film's exposure profile can be uploaded from a computer (Macintosh or Windows) to the L-758DR.Up to three different digital camera or film exposure profiles can be saved and quickly retrieved with a touch of a button. With its Pre-Exposure warning indicators and adjustable mid-tone settings, the L-758DR puts the power of digital exposure control in the palm of your hands.Sekonic L-758DR/401758 SpecsMeasuring SystemDigital exposure meter for ambient and flash light; 2-Silicon photo diodes (incident and reflected)Measuring ModesIncident and reflected lightReceptor HeadRotating; Convertible to flat diffuser (Lumisphere in down position); 3.3' to infinity (1m to infinity); 1° spot with display in finderAperture/Shutter PriorityAperture 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 ReadoutU (underexposure) or O (overexposure) indicationAuto illumination: EV 6 and under (custom setting function);Diopter adjustment: -2.5 to 1.0dISO RangeSecond ISO film speed setting: ISO 3 to 8000 (in 1/3 stop)f/Stop Display RangeAmbient Light Incident 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 - AmbientAmbient light: 30 minutes to 1/8000 seconds (in 1, 1/2 or 1/3 stop) plus 1/200, 1/400Shutter Speed - FlashFlash: 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, 1/400EV Range (ISO-100)-9.9 to 46.6EV (in 1/10 stop)Cine Speeds2, 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 Memory9 readings on analog scale (f/stop and shutter speed) with memory recall and clear featureShadow/Highlight CalculationYesBrightness Difference+/- 9.9 EV (in 1/10 stop)Flash to Ambient Ratio0 to 100% in 10% incrementsMultiple FlashUnlimited flash readings (only one digit is displayed when the cumulative number is ten or more)Up to 9 readings can be averagedPower SourceOne 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)Weight9.5 oz (268 gm) with batteryExposure Calibration+/- 9.9 EV (in 1/10 stop)Calibration compensation: +/- 1.0 EV (in 1/10 stop)SpecialtiesBuilt-in radio transmitter moduleJIS standard water resistance class 4, splash-proof type1/4" tripod socket for placing meter in subject area for cordless flash measuringDimensions3.5 x 6.7 x 1.9" (90 x 170 x 48 mm) (WHD)Packaging InfoPackage Weight1.7 lbBox Dimensions (LxWxH)10.0 x 6.5 x 3.5"