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The Sekonic L-758DR DigitalMaster is the World's first multi-function light meter than can be programmed to match the sensitivity of digital camera sensors or types of film for perfect exposure control. Digital exposure has presented new challenges for photographers and Sekonic has responded with a digital-ready light meter to meet and exceed the demand for digital exposure control. The L-758DR DigitalMaster offers all the features found on the popular L-558R DualMaster, however, that's where the similarities end.

From its inception, the L-758DR has been designed from the ground up to address the needs of today's digital photographers. Since no two digital cameras, camera and light meter or different types of films are likely to agree on exactly the same exposure, they need to be matched to one standard. Sekonic has recognized the need for this and has created a convenient solution, the L-758DR.

With its internal programmable memory, the L-758DR can compensate for variation in exposure accuracy caused by different ISO settings, light sources, measuring methods and even file formats. In addition, the dynamic range of a camera sensor can be stored and displayed on the meter's LCD screen. This is a valuable feature because it presents the photographer with the dynamic range limits of their camera's sensor before taking the photograph. In addition, the L-758DR has blinking pre-exposure warning indicators to alert the photographer when a measured highlight or shadow has met or exceeded the dynamic range. Clipping points (user defined dynamic range limits) can also be programmed for additional exposure control.

Up to three different exposure profiles (digital cameras and/or films) can be stored at the same time in the L-758DR and recalled with a quick keystroke. Each exposure profile contains the unique exposure characteristic of a type of film or digital camera sensor.

Using the included Sekonic Data Transfer Software and the provided USB cable, exposure profiles can be loaded into the L-758DR through its built-in USB port. Exposure profiles can be acquired through a four-step exposure test using the optional Sekonic test target, or pre-tested exposure profiles can be downloaded from (available 12/06).

Loaded with many new features such as midtone adjustment, built-in wireless triggering with channel/zone continuously displayed, user upgradeable firmware, enhanced memory store/clear mode and 14 different custom settings, the L-758DR DigitalMaster is a new breed of digital exposure control.


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 degree spot with display in finder
Aperture/Shutter Priority
Aperture priority metering, Shutter priority metering, EV metering
With synchro cord (cumulative and non-cumulative), Without synchro cord (cumulative and non-cumulative)
Measurement with built-in wireless flash triggering radio trig
Display Readout
U (underexposure) or O (overexposure) indication
Auto 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 Light
Incident light: -2 to 22.9EV
Reflected light: 1 to 24.4EV with 1 degree spot viewfinder
Repeat Accuracy: +/- 0.1 EV or less
f/Stop Display Range - Flash
Incident light: f/0.5- f/161.2 (approx. f/175)
Reflected light: f/2.0 to f/161.2 (approx. f/175) with 1 degree spot viewfinder
f/Stop Display Range - Aperture
f/0.5 to f/161.2 (in 1, 1/2 or 1/3 stop)
f/Stop Display Range - 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 Light
30 minutes to 1/8000 seconds (in 1, 1/2 or 1/3 stop) plus 1/200, 1/400
Shutter Speed - 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 degree shutter angle)
Exposure Memory
9 readings on analog scale (f/stop and shutter speed) with memory recall and clear feature
Shadow/Highlight Calculation
Exposure Calibration
+/- 9.9 EV (in 1/10 stop)
Calibration compensation: +/- 1.0 EV (in 1/10 stop)
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
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 122deg F (-10 to 50deg C) Storage Temperat
Dimensions (WxHxD)
3.5 x 6.7 x 1.9" (90 x 170 x 48mm)
9.5 oz (268 gm) with battery
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