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Sekonic L-858D Speedmaster Light Meter

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  • Sekonic L-858D Speedmaster Light Meter
  • Sekonic L-858D Speedmaster Light Meter
  • Sekonic L-858D Speedmaster Light Meter
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 Product Description

With it's 2.7" color touch screen and truly innovative and sophisticated features, the Sekonic Speedmaster L-858D 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 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 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 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 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.


  • Incident Metering for Ambient & Flash

  • 1° Spot Metering with Viewfinder

  • Measuring Range: -5 to 22.9 EV (ISO 100)

  • Illuminance Range: 0.1 to 2,000,000 lux

  • Extensive Range of Cine & Video Settings

  • HSS Flash & Flash Duration Measurements

  • Flash Analyzing Function; Extended Range

  • 2.7" Touchscreen LCD; All-Weather Design

  • Optional Radio Control Modules


Flash Duration Measurements

Understanding flash duration is the first step in freezing fast-moving subjects. Since all cameras are limited to relatively low sync speeds, stopping motion in a single image is often achieved by leveraging short flash durations with the camera’s max sync speed. A long-held secret of some of the world’s most talented photographers, the key to freezing action consistently is found in being able to measure flash duration. Photographers are now able to do this easily for the first time, demystifying one of photography’s most challenging techniques.


Radio Control Modules for Wireless Triggering

Having pioneered wireless exposure measurement, the L-858 Speedmaster Pro expands upon this ground-breaking innovation by adding functionality for Elinchrom Skyport and Phottix Strato II/ Ares II users allowing more photographers to experience the benefits of wireless freedom.

With the PocketWizard module photographers can easily trigger any PocketWizard wirelessly and control the power of their lights with any Control TL Compatible Unit.

With the Combined Elinchrom & Phottix Module, photographers have full Skyport triggering and power-control capabilities, while Phottix users have Strato II and Ares II triggering capabilities.


Increased Light Sensitivity

 Increased ISO capabilities in today’s cameras have created a need for light meters to increase their ability to measure light in the dimmest of settings. With an additional 3-stops of light sensitivity for incident light, 2-stops of light sensitivity for reflected light (spot), and an ability to capture a reading down to 0.1 lx of Illuminance, accurately metering scenes lit by candlelight or getting the right measurement for long-exposure night photography is now a possibility.


HSS Flash Measurements

The L-858D is the first meter of its kind that can measure the stroboscopic pulses fired from strobes when they are used for Hi-Speed Sync. Finally, photographers now have an accurate way of measuring their lights when they want to overpower the sun or achieve a very shallow depth of field through using HSS.


Flash Analyzing Function

The L-858D is especially useful for on-location shooting to lighten shadows or reduce background detail. That's because it measures ambient and flash simultaneously and automatically indicates the percentage of flash in the total exposure. You can easily adjust the ambient flash mix by turning the Jog Wheel. The digital display indicates the camera settings and an analog display shows the relationship between ambient and flash and the total exposure.

            20% Flash                        50% Flash                           100% Flash


Determining the Dynamic Range of your camera


Shoot with the equipment you use most. Make tests under daylight and studio lighting. Exposure Profile Target requires an 11-shot bracket (0, +/- 5EV). Exposure Profile Target II shown at the right requires a 3-shot bracket (-3EV, 0,+3EV). Make a spot reading of 18% reflectance tone and incident reading in front of target and record data. Shoot the bracketed shots based on incident light measurement.


Entering Data


Download test images into computer. If shot in RAW, convert to TIFF for computation. Enter ISO, incident, and reflected light shooting data. Then select images and press OK to watch the Sekonic Data Transfer Software program graph the dynamic range of your DSLR camera. Save the data for transfer to the L-858D

Full information Spot Viewfinder


The 1-degree spot meter has a broad reading range from EV 1 to EV 24.4 for ambient light and measures flash down to an amazing f/2.0. Its large, bright viewfinder with diopter correction and full-information data display give you everything you need to make the right exposure decisions without having to take your eye from the eyepiece.


Additional Features


Expanded Shutter Speed Range for Ambient Light
Measure ambient light for shutter speeds between 30 min. to 1/64,000s

Expanded Shutter Speed Range for Strobe
Measure strobes for shutter speeds between 30 min. to 1/16,000s

Extended ISO Range
Additional ISO range from ISO 3 to ISO 13,107,200, with ISO 850 for cinema cameras

Full HD Cine and CINE modes
Measure from 1 to 1000 fps or shutter angles of 1 to 358 degrees

Filter Compensation Mode
Photographers and filmmakers using high-density ND filters now have a filter factor of up to 12EV.
Save up to 30 “favorites,” to instantly know what exposure compensation needs to be considered.

2.7” Color dotmatrix touch screen
Allows users to quickly and easily change settings and read important information

Connectivity with MAC/PC DTS Software
Upgrade firmware, apply custom settings, and utilize exposure profiling

All-Weather Design
Dust-proof and Splash proof (JIS Standard Water Resistance Class 4, Splash-Proof Type) for continued reliability and durability on-set, in any location.





Measuring System


Incident light Swivel head Horizontal (270 degrees)
  Lumidisc Retractable
Reflected light Switching incident/reflected Operation on LCD
  Light receiving angle 1degree(built-in)
  Viewfinder(Optional) No
Flash light Multiple flash mode  Yes
  Cordless/cord-in mode Yes
  Radio triggering mode PocketWizard Yes (optional)
  Radio triggering mode Elinchrom Skyport Yes (optional)
  Radio triggering mode Phottix Yes (optional)
  Flash duration analysis mode Yes
  HSS mode



Measuring Range(ISO100)


Ambient Incident EV -5 to 22.9
  Reflected EV -1 to 24.4
  Option VF 1deg. EV No
  Option VF 5 deg. EV No
  Option VF 10 deg. EV No
  Illuminance LUX 0.1 to 2,000,000 lx
    FC(Foot-Candle) 0.01 to 180,000 fc
  Luminance Cd/m2 0.1 to 980,000 cd/m2
    FL(Foot-Lambert) 0.03 to 290,000 fl
Flash Incident F F0.5 to F161.2(=128.9)
  Reflected F F1.0 to F161.2(=128.9)
  Option VF 1 deg. F No
  Option VF 5 deg. F No
  Option VF 10 deg. F No


Display Range


ISO Sensitivity ISO   3 to 13,107,200
  ISO 2   No
Ambient Aperture Digital F0.5 to 161.2(=128.9)
    Step 1,  1/2,  1/3AV
    Decimal fraction 0 to 0.9(digital)
    Step 1/10AV
    Analog dot scale F1.0 to 90
    Step 1/3 AV
  Shutter speed Digital 30m to 1/64,000s
    Step 1,  1/2,  1/3 TV
    Analog dot scale 4s to 1/2,000s
    Step 1/3 AV
  Frame Rate Digital 1 to 1,000 f/s
  EV Digital -73.9 to 103.8 for incident
-69.9 to 105.3 for reflected
    Analog dot scale -3.0 to +3.0 EV for incident
-7.0 to +7.0 EV for reflected
    Step 1/3 EV
  Lux Digital 0.1 to 2,000,000 lx
    Step 2 significant digits
    Analog dot scale 0 to 1,000 lx
    Step in 50 lx
    Analog dot scale 0 to 5,000 lx
    Step in 250 lx
    Analog dot scale 0 to 25,000 lx
    Step in 2,500 lx
  FC(Foot-candle) Digital 0.01 to 180,000 fc
    Step 2 significant digits
    Analog dot scale 0 to 100 fc
    Step in 5 fc
    Analog dot scale 0 to 500 fc
    Step in 25 fc
    Analog dot scale 0 to 5,000 fc
    Step in 250 fc
  Cd/m2 Digital 0.1 to 980,000 cd/m2
    Step 2 significant digits
    Analog dot scale 0 to 50 cd/m2
    Step in 2.5 cd/m2
    Analog dot scale 0 to 250 cd/m2
    Step in 12.5 cd/m2
    Analog dot scale 0 to 2,500 cd/m2
    Step in 125 cd/m2
  FL(Foot-lambert) Digital 0.03 to 290,000 fl
    Step 2 significant digits
    Analog dot scale 0 to 20 fl
    Step in 1 fl
    Analog dot scale 0 to 100 fl
    Step in 5 fl
    Analog dot scale 0 to 1,000 fl
    Step in 50 fl
Flash Aperture Digital F0.5 to 161.2(=128.9)
    Step 1,  1/2,  1/3AV
    Analog dot scale F0.1 to 90
    Step 1/3 AV
  Shutter speed Digital 30m to 1/16,000s
    Step 1,  1/2,  1/3TV
  EV Digital No
    Analog dot scale -3.0 to +3.0 EV for incident
-7.0 to +7.0 EV for reflected
    Step 1/3 EV
  Flash duration Digital 1/40 to 1/55,500(25ms to 18us)

Setting Range


ISO Sensitivity   ISO 3 to 13,107,200 plus 850
    Step 1/3 SV
    ISO 2 No
    Step No
Ambient Aperture F F0.5 to 161
    Step 1,  1/2,  1/3AV
  Shutter speed T 30m to 1/64,000s
plus 1/200, 1/400s
    Step 1,  1/2,  1/3TV
  Shutter angle degrees 1 to 358 deg. plus other 20 settings (customized from 0.001 to 360)
  Frame Rate frame per second 1, 2, 3, 4, 6, 8, 10, 12, 14, 15, 16, 18, 20, 23.976,
24, 25, 29.97, 30, 32, 36, 40, 47.952, 48, 50, 59.94,
60, 64, 72, 75, 90, 96, 100, 120, 125, 128, 150, 180,
200, 240, 250, 256, 300, 360, 375, 500, 625, 750,
1000 plus other 20 settings (customized from 0.001 to 99,999.999)
Flash Shutter speed T 30m to 1/16,000s
plus 1/75,  1/80,  1/90,  1/100,  1/200,  1/400s
    Step 1,  1/2,  1/3TV
  Flash duration  t value 0.1 to 0.9 (in 0.1 step)



Multiple cumulative Yes(Unlimited)
Average Yes
Shadow No
High light No
Zone System No
Flash Analyzing Yes(in 10% step)
Memory Yes(9 times) both incident and spot
Memory clear Yes (individually)
Contrast Function Yes(+/-9.9EV in 1/10 step)
Film memory (ISO 2) No
Filter compensation Yes(-12 to 12EV)
Filter factor number compensation Yes (preset 24 types plus 6 settings)
External receptor jack No
USB port Yes
Battery check Yes
Auto power off Yes (selectable.)
Under/Over exposure display Yes
Exposure Warning Indicator Yes
Exposure compensation Yes(-9.9 to +9.9)
Calibration compensation Yes(-1.0 to +1.0)
Exposure Profile Yes
Dip switch (L-358/608) No
Custom settings Yes (17 items)
Synchro terminal Yes
LCD backlight Yes
Water registance Yes
Switching incident/reflected Yes (software)
Retractable lumisphere Yes
Setting lock Yes (Touch panel)
How to change setting Touch panel operation
Diopter adjustment Yes (-1 to 2.5 D)
Tripod socket Yes



Operating temperature -10 to 50℃
Storage temperature -20 to 60℃
Power source 1.5V x 2 (AA battery) and USB bus power
Weight 300 g
Dimensions (W x H x D) 93.9 x 176.3 x 49.4 mm
LCD 2.4" color dot matrix LCD


Standard Accessory

USB cable No
CD-rom with Software & Manual No (download from website)
Sticker for multi-key &/or CS operation No
Quick Guide / Start Up Guide Yes
Lens Cap Yes
Strap Yes
Synchro terminal cap Yes (built-in)
Soft case Yes
Anti glare film Yes


Optional Accessory supplied

Booster No
Mini light receptor No
Viewfinder No
Lumishphere Yes
Lumidisc Yes (same as Lumisphere)
Lumigrid No
ND diffuser No
Pin point receptor No
Spot mask No
Synchro cord Yes
Radio wave triggering system Yes
Step-up ring Yes
18% Gray card (folded) Yes
Exposure Profile Target / II Yes


Package Includes


1 x Sekonic L-858D Speedmaster Light Meter

1 x Strap

1 x Lens Cap (Installed on the meter)

1 x Soft Case

1 x Anti-glare sheet for LCD Screen

1 x Start-up Guide

1 x Safety precaution guide

Note: 2 x AA Batteries are not included

 Product Videos

SpeedMaster L-858D Quick Start - Getting Started
  • SpeedMaster L-858D Quick Start - Getting Started
    In this quick start video series, we will walk you through how...
  • Sekonic L-858D for Photographers
    Learn More: http://bit.ly/2mG5XFE The first meter of its kind...

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