The Sekonic L-758DR DigitalMaster is simply the most dynamic light meter you will ever own. It can record incident or 1-degree spot-readings under ambient and/or strobe lighting down to a tenth-stop in accuracy, and it's sealed against the nastiest of weather. With the built-in Sekonic RT-32 Radio Transmitter Module and you can wirelessly trigger PocketWizard-enabled flash systems within a 100' range. But that's not what makes the Sekonic L-758DR DigitalMaster different from any other meter you have owned. What moves the L-758DR DigitalMaster to the head of the class is that it is the only meter that can be calibrated to read light the way the sensor in your particular camerareads light.
Like film, imaging sensors vary in light sensitivity levels from one batch to the next. Despite manufacturers best efforts, fluctuations of native ISO sensitivities of up to plus/minus half-a-stop can be detected across the uncut wafers as they come off the manufacturing line. Depending on which ‘slice of the pie' is inside your camera, the specs listed in the camera manual may not hold true to the characteristics of the sensor in your particular camera.
By running an easy calibration test using Sekonic's L-758DR, a Sekonic Exposure Profile Target (optional) and the included Data Transfer Software (Mac & Windows), you can accurately profile the sensitivity characteristics of your camera's sensor to determine the compensation value for its true native ISO, dynamic range and clipping points.
After calculating the test data and establishing new exposure parameters, this data is uploaded from your computer via the included USB cable back to the meter where it is stored as camera profiles. Profiling data from up to 3 cameras can be stored in your meter for instant recall.
Sekonic L-758DR DigitalMaster
Spot & Incident Light Readings Under Flash and/or Ambient Lighting Conditions Calibrated to match the Sensitivity of Your Camera's Imaging Sensor
Download: DTS Software for L-758 series
Profiles the specific sensitivity levels of your camera's imaging sensor for exacting light readings.
Exposures accurate down to a tenth-of-a-stop in full-stop mode for both ambient and electronic flash light readings with a repeat accuracy of +/- 0.1 EV. Meter can also display shutter-speeds and apertures in half or third-stop increments to mirror the exposure settings on your camera. Flash exposures can be recorded cumulatively or non-cumulatively.
Built-in 1-degree spot meter features an adjustable diopter (-2.5 to 1.0d), and is threaded for 30.5mm filters and/or lens hood (a tethered lens cap is included). Large red LED characters display exposure data within the viewfinder allowing for real-time exposure referencing while maintaining continuous eye contact with your subject.
The L-758DR's head swivels 270-degrees allowing you to ‘walk the set' while maintaining constant visual contact with the meter's LCD display. Flash exposures can be taken with or without a tethered PC cord.
Up to 9 readings can be stored for meter averaging and contrast evaluations in aperture and shutter priority modes.
Mid-tone button allows you to shift the highlights or shadows to within the dynamic range of the profiled exposure reading. Warning flashes for out of range readings.
Incident readings of three-dimensional objects are taken using the Lumisphere, which can be retracted for selective, narrower-field readings such as contrast ratio for flash lighting or for flat-field objects such as artwork.
For mixed lighting scenarios, the Sekonic L-758DR DigitalMaster displays the combined exposure values of both flash and ambient light sources, including the percentage of flash in total exposure in 10-percent increments.
Dual ISO buttons allow for quick exposure referencing when working with two differing film speeds, film and Polaroids, or other shooting scenarios involving dual ISO ratings.
An indigo, backlit LCD screen with large text and icons allows for easy referencing when ambient light levels drop below EV 6.
For wireless metering – including Selective Quad Triggering - the included Sekonic RT-32 Radio Transmitter Module will wirelessly trigger PocketWizard-enabled flash systems within a 100' range from a choice of 32 channels.
Digital exposure meter for ambient and flash light
Light receiving method:
Incident light and reflected light
Convertible to flat diffuser (Lumisphere in down position)
1° spot with display in finder
Reflected metering distance:
~ 3.3' to infinity (~1m to infinity)
Light receptor element:
2-Silicon photo diodes (incident and reflected)
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 triggering system (cumulative and non-cumulative)
Complex 16/24 bit digitally coded
Up to 100 feet from transmitter to receiver or transceiver
1 to 16 channels standard, 17 to 32 "Selective Quad Triggering"
Radio wave frequency
USA & Canada (FCC & IC)
CH1-CH16 344.00MHz CH17-CH32 346.50 ~ 354.00MHz
CH1-CH16 433.62MHz CH17-CH32 434.22MHz
Measuring Range (ISO 100)
Incident light: EV-2 to EV 22.9 Reflected light: EV 1 to EV 24.4 with 1° spot viewfinder
Incident light: f/0.5 to f/161.2 (approx. f/175) Reflected light: f/2.0 to f/161.2 (approx. f/175) with 1° spot viewfinder
+/- 0.1 EV or less
Incident light metering:
Lumisphere C = 340
Retracted C = 250
Reflected light metering:
K = 12.5
ISO 3 to 8000 (in 1/3 steps)
Ambient light: 30 minutes to 1/8000 seconds (in 1, 1/2 or 1/3 stop) plus 1/200, 1/400 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) 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
f/0.5 to f/161.2 (in 1, 1/2 or 1/3 stop)
EV -9.9 to EV 46.6 (in 1/10 stop)
Aperture: 0.7 to f/90 EV Range: -7.0 EV to +7.0 EV (in 1/3 steps)
0.7 to f/90 (in 1/10 stop)
JIS standard water resistance class 4, splash-proof type
9 readings on analog scale (f/stop and shutter speed) with memory recall and clear feature
Multiple Flash function:
Unlimited flash readings (only one digit is displayed when the cumulative number is ten or more)
Up to 9 readings can be averaged
Brightness Difference function:
+/- 9.9 EV (in 1/10 stop)
Flash analyzing function:
0 to 100% in 10% increments
Exposure Out of Range:
U (underexposure) or O (overexposure) indication
+/- 9.9 EV (in 1/10 stop)
+/- 1.0 EV (in 1/10 stop)
Battery Power Indicator display:
With 3 level status icon
Auto Power Off:
20 minutes after last use (10, 5 or no shut off in custom setting mode)
EV 6 and under (custom setting function)
1/4" Tripod socket:
For placing meter in subject area for cordless flash measuring
Second ISO film speed setting:
ISO 3 to 8000 (in 1/3 stop)
-2.5 to 1.0d
One CR123A battery (3V Lithium dry cell); 60 hours
Operating temperature range:
14° to 122° F (-10° to 50° C)
Storage temperature range:
-4° to 140° F (-20° to 60° C)
3.5"W x 6.7"H x 1.9"D (90mmW x 170mmH x 48mmD)
9.5oz (268gm) with battery
Standard accessories supplied:
Soft case, strap, lens cap, synchro terminal cap, CR123A Lithium battery, Custom Settings Chart (sticker), Multi-Function Chart (sticker), USB cable, Data Transfer Softer
Note: This radio triggering system may be used only in countries where a permit for the control frequency has been issued by the government office in charge. There are several kinds of frequencies in the world, and we recommend you check if your transmitter(s) and receiver(s) are compatible with each other.
Features and specifications are subject to change without notice.