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Sekonic Sekonic L-558R DUAL MASTER Light Meter

SKU: 401-558 | Free U.S. shipping on orders over $100!

  • The L-558R is the world's first light meter with PocketWizard radio transmitter built-in
  • The L-558R includes Sekonic’s unique built-in retractable Lumisphere
  • The L-558R is also a true 1-degree spotmeter, with a parallax-free viewfinder
  • The L-558R features an extra large, cool-green-illuminated full-information LCD panel that displays the complete range of readouts and modes as well as battery condition
  • The L-558R includes a flash/ambient analyzing mode that simultaneously reads both flash and ambient light automatically, and can display combined flash-ambient readings
  • The L-558R includes a broad range of custom settings so pros and enthusiasts can tailor it to their individual working methods
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The L-558R DUALMASTER incorporates a wireless triggering transmitter built-in. It has been designed to meet the challenges and demands of today’s film and digital photographers. The L-558R offers versatile functions, to accommodate the most critical and precise photographic shooting conditions without sacrificing ease of use and affordability. It offers superior performance with new, redefined standards for precise, multi-function exposure and analyzing controls. With a turn of a knob the L-558R changes from an incident meter to a 1 degree spot meter all combined into one rugged, compact, all-weather housing. It features a Digital 1 degree Spot viewfinder, which displays f-stops, shutter speeds, EV and more. In electronic flash measurement modes, the flash-analyzing feature simultaneously evaluates both flash and ambient light. Along with many features such as special light measurement modes, extended sensitivity range, custom calibration and CINE mode, it also offers custom settings. The L-558R’s flexible design accommodates your ever-changing shooting situations. That’s because it’s the world’s first multi-function meter with Digital Wireless Freedom built-in. With its built-in radio transmitter you now can simultaneously trigger your remote camera and or flash units and measure the flash output wirelessly, eliminating the use of unreliable PC-synch cords or shutter release cables. The L-558R DUALMASTER... the Power of Control… the Freedom of Wireless.


Catalog Numbers:
Measuring System:
Exposure Meter
Incident light: Swivel head, retractable lumisphere
Reflected light: Switching, 1 deg. spot
Measuring Range and Modes:
Measuring Modes (Ambient Light):
T priority, F priority, EV, f/s priority, Lux/FC
Measuring Modes (Flash light):
Cordless, Cord-in (PC), Radio triggering (Built-in, PocketWizard), Multiple cumulative flash
Measuring Range at ISO100 (Ambient Incident Light):
EV-2 to EV22.9
Measuring Range ISO100 (Ambient Reflected Light):
EV1 to EV24.4
Measuring Range (Flash Incident Light):
F0.5 to F161.2(=128.9)
Measuring Range (Flash Reflected Light):
F2.0 to F161.2(=128.9)
ISO Range:
ISO 3 to ISO 8,000
Aperture Range (Ambient Light):
F0.5 to F161.2(=128.9) in 1, 1/2, 1/3 step
Aperture Range (Flash Light):
F0.5 to F161.2(=128.9) in 1, 1/2, 1/3 step
Shutter Speeds Range (Ambient Light):
30m to 1/8,000s in 1, 1/2, 1/3 step
Shutter Speeds Range (Flash Light):
30m to 1/1000
Frame Rate Range (Ambient Light):
2 f/s to 360 f/s
Shutter Angles Range (Ambient Light):
1 deg. to 270 deg. plus 12, 17, 22, 144, 172 deg.)
EV Range (Ambient Light):
EV-9.9 to EV46.6
Yes (9 times)
Contrast/Comparison Function:
Radio System:
Built-in Transmitters with RT-32N - PocketWizard
Flash vs Ambient Analyzing:
Yes (in 10% step)
Filter Compensation:
Yes (-5.0EV to 5.0EV)
Exposure Compensation:
Yes (-9.9EV to +9.9EV)
Calibration Compensation:
Yes (-1.0EV to +1.0EV)
Custom Settings:
Yes (6 custom settings)
Diopter Adjustment:
Yes (-1 D to 2.5 D)
Tripod Socket:
Operating Temperature:
-10 deg. C to 50 deg. C
Storage Temperature:
-20 deg. C to 60 deg. C
Power Source:
3.0V x 1(CR123A battery)
B&W, Segment type
LCD Backlight:
Product Weight (lb):
Product Weight (kg):
Product Height (in):
Product Length (in):
Product Width (in):
Product Height (cm):
Product Length (cm):
Product Width (cm):



Sekonic Sekonic L-558R DUAL MASTER Light Meter Firmware


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