Sekonic L-858D-U Speedmaster Light Meter (401-858)

  • $599.00
    Unit price per 
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Sekonic L-858D-U Speedmaster Light Meter

With it's 2.7" color touch screen and truly innovative and sophisticated features, the Sekonic Speedmaster L-858D-U leads the way to the next generation of light measurement control as the world's first multi-function light meter for photographers and filmmakers. Leveraging over 60 years of experience in the image-making world with cutting-edge technology, the Sekonic Speedmaster L-858D-U has undergone a significant design change and boasts a comprehensive feature set sure to meet and exceed the demands of today's photographers and filmmakers.

The first meter of its kind capable of measuring flash duration, while also being able to achieve an accurate ambient exposure reading in dimly lit scenes as low as 0.1 lx, the Sekonic L-858d-U provides image-makers of all levels with the critical exposure data they need to create stunning and beautiful imagery.

The first to provide wireless compatibility with Elinchrom, Phottix, and PocketWizard products, the Sekonic Speedmaster L-858D-U also provides ultimate control to photographers seeking a faster and more streamlined workflow. Limitless creative possibilities are within reach through the meter’s ability to measure High Speed Sync (HSS) and calculate proper ambient-flash exposure for precision flash exposure control.

With an increased light-sensitivity and extended ISO and Shutter Speed Ranges, the Sekonic Speedmaster L-858D-U enables all image-makers to obtain measurements in extremely low light and turn those readings into creative decisions. Finally, matching the high-ISO capabilities of today’s cameras, by accurately metering in low-light, is finally possible.

Meter Type Ambient
Spot Metering 1° Spot
Flash Metering Cordless
Light Reading Method Incident
Light Readings Candelas per Meter Squared (cd/m²)
          Foot Lamberts (fl)
Measuring Modes Aperture Priority
          FPS Metering
          Flash Duration Analysis
          HSS Flash
          Shutter Priority
Aperture Range Flash, Incident: f/0.5 to 128.9 at ISO 100
          Flash, Reflected: f/1 to 128.9 at ISO 100
          f/0.5 to 161.2 (1, 1/2, 1/3-Step Increments) at ISO 100
EV Range Ambient, Incident: -5 to 22.9 EV at ISO 100
          Ambient, Reflected: -1 to 24.4 EV at ISO 100
ISO Range 3 to 13,107,200 (1/3-Step Increments), Plus 850
Shutter Speed Range 1/64,000 to 30 Minutes (1, 1/2, 1/3-Step Increments), Plus 1/400, 1/200
Max Flash Sync Speed 1/16,000
Cine Speed / Shutter Angle 0.001 to 1000 fps at 1 to 358°
Illuminance Range 0.1 to 2,000,000 lux / 0.01 to 180,000 fc
Luminance Range 0.3 to 290,000 fL / 0.1 to 980,000 cd/m²
Exposure Memory Yes, 9 Readings
Receptor Element Silicon Photodiode
Diffuser Adjustable Spherical to Flat
Display 2.7" / 6.9 cm Color Touchscreen LCD
Interface PC Sync Terminal
          Micro-USB Port
Memory Card Slots None
Tripod Mounting Thread 1/4"-20
Operating Temperature 14 to 122°F / -10 to 50°C
Operating Humidity 0 to 85%
Storage Temperature -4 to 140°F / -20 to 60°C
Storage Humidity 0 to 85%
Battery 2 x AA (Alkaline, Manganese)
Wireless Connectivity None
Radio System None
Dimensions 3.7 x 6.9 x 1.9" / 94 x 176 x 49 mm
Weight 8.5 oz / 240.0 g (without Batteries)

  • Sekonic Speedmaster L-858D-U Light Meter
  • Anti-Glare Sheet for LCD Screen
  • Lens Cap
  • Strap
  • Soft Case
  • Limited 1-Year Warranty with 2-Year Extension upon Online Registration