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Reviews about this item

Review Summary

2025-12-22T07:51:28

Rated 5 out of 5

Excelente producto!!!!

Excelente producto, facilita mucho el flujo de trabajo por todas las opciones que tiene al momento de hacer la medición de luz. Recomendado al 100%, si lo necesitas

NEFTALI T.

2024-04-24T19:59:26

Rated 5 out of 5

This meter will pay for itself over time!

I am so happy I can control each of my flashpoint and godox strobe lights power individually and can trigger them via the flash meter. Saves a lot of time when you need to change the power of just one light or a group of lights. Can measure the real output of high speed sync rather than having to guess. Touchscreen is easy to use and read.

RICHARD D.

2024-04-08T09:41:23

Rated 5 out of 5

Sekonic Lightmeter for Flashpoint

Excellent lightmeter and controller

KIM S.

2024-03-23T08:38:48

Rated 3 out of 5

Do your due diligence researching this product before purchasing!

Perhaps you're looking at the L-858D-U because you read about the custom camera profiling feature and thought that was exactly what you were looking for. That's what sold me on this unit, however, little did I know that it requires the use of a piece of software that can be downloaded from the Sekonic website and that program is no longer being supported apparently. The long and the short of it is that you can download the program and even go through the process of creating a custom profile for your camera, but you won't be able to upload that profile to the meter because the meter won't connect the computer through USB as it is supposed to and all of your time was spent for nothing. The driver that the DTS software installs is for the L-758 meter, which may or may not be part of the issue, and there is no available help or information to solve this issue. Research it for yourself and see. I would've bought a less expensive unit if I had known that the main feature of this unit, for which I purchased it, is useless to me.

Michael C.

2023-05-09T23:53:58

Rated 4 out of 5

Menus are poorly designed and buggy. Some common settings are buried. Touchscreen requires a fingernail.

Touchscreen, is stiff, requires a finger nail. The menus could be a lot better organized. For example if ya just wanna back out one menu level, it closes the whole menu system instead of just backing up. So ya have to start all over and find where you were again. Annoying and unprofessional. Some aperture settings are not settable, based on what t+f steps you have set. So if ya want a 1.2 aperture, ya have to set the t+f step size to 0.5. Otherwise it'll jump from 1.1 to 1.3, then same thing again if ya want a 1.8 aperture, ya have to set the t+f step size back again to 0.3. Ridiculous and cumbersome! Otherwise it works well, good battery life. My Godox radio is fantastic!

JOE S.

2023-04-11T09:04:49

Rated 5 out of 5

Perfect Spot Meter

I was looking for an off-camera spot meter that's accurate and easy to use, and this fit my needs perfectly.

WEICHI W.

2023-01-22T05:31:40

Rated 5 out of 5

Great Light Meter

Great light meter. Exactly what I was looking for. Especially happy that it is now compatible with Broncolor lighting.

Robert N.

2021-07-23T14:38:50

Rated 5 out of 5

Light meter integration with Godox/Flashpoint strobes.

Excellent integration of light meter with Godox lighting. You can control al the lights, ratios, modeling lamp and adjust the ratios as desired. The Godox/Flashpoint remote is just for triggering the lights along with shutter of the camera. Photo shoot workflow has become a breeze.

SRINIVAS G.

2021-07-18T16:57:49

Rated 4 out of 5

NIce

Great meter for Godox users. Pricing could be better.

anthony a.

2021-05-27T09:18:25

Rated 5 out of 5

The best of the best light meter, oh did I mention it's the BEST?(In regards of completely changing your lighting photo world)

Of course when someone told me about light meters and to go buy one, really, do you need to look further? I mean, I purchased this light meter to begin, learn, and grow old with. It IS THE BEST and if you are hinting towards a studio with lighting career, then this is definitely the go to light meter with the functions that set your parameters you want. This will deliver great results whatever you can imagine to throw at it.

michael h.

2021-04-21T12:23:57

Rated 5 out of 5

Good

Good item I love work excelente

Pedro M.

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Sekonic L-858D-U SPEEDMASTER Specifications

  • Aperture Range

    Ambient Light: F0.5 to 161.2(=128.9) in 1, 1/2, 1/3 step (Analog Scale: F1.0 to F90 in 1/3 step)
    Flash Light: F0.5 to 161.2(=128.9) in 1, 1/2, 1/3 step (Analog Scale: F1.0 to F90 in 1/3 step)

  • Average

    Yes

  • Country of Origin

    Philippines

  • Calibration Compensation

    Yes (-1.0 to +1.0)

  • Contrast/ Comparison Function

    Yes (+/-9.9EV in 1/10 step)

  • Custom Settings

    Yes (17 custom settings)

  • Diopter Adjustment

    Yes (-1 to 2.5 D)

  • EV Range (Ambient Light)

    Incident light: EV-73.9 to EV103.8
    Reflected light: EV-69.9 to EV105.6

  • Exposure Compensation

    Yes (-9.9 to +9.9)

  • Flash vs Ambient Analyzing

    Yes (in 10% step)

  • Frame Rate Range (Ambient Light)

    4 to 1,000 f/s plus other 20 settings (customized from 0.001 to 99,999.999)

  • ISO Range

    ISO 3 to ISO 13,107,200 + ISO 853

  • LCD

    2.7" color dot matrix touch panel LCD

  • LCD Backlight

    Yes

  • Measuring Modes

    Ambient Light: T priority, F priority, TF priority, HD_CINE (T priority), CINE (f/s priority), Lux/FC, Cd/m2/FL
    Flash light: Cordless, Cord-in (PC), Radio triggering (Optional), Multiple cumulative flash, HSS, Flash duration analysis

  • Measuring Range

    Flash Incident Light: F0.5 to F161.2(=128.9)
    Flash Reflected Light: F1.0 to F161.2(=128.9)

  • Measuring Range at ISO100

    Ambient Incident Light: -5 to 22.9 EV
    0.1 to 2,000,000 lx
    0.01 to 180,000 fc
    Ambient Reflected Light: -1 to 24.4EV
    0.1 to 980,000 cd/sq. m 0.03 to 290,000 fl

  • Measuring System

    Exposure Meter:
    Incident light: Swivel head, lumidisc retractable
    Reflected light: Switching, 1 deg. Spot

  • Memory

    Yes (9 times) both incident and reflected light

  • Operating Temperature

    14 to 122 deg. F (-10 to 50 deg. C)

  • Storage Temperature

    -4 to 140 deg. F (-20 to 60 deg. C)

  • Power Source

    1.5V x 2 (AA battery), USB bus-power

  • Radio System

    Optional Transmitters with RT-20PW - PocketWizard (344MHz) with RT-EL/PX - Elinchrom EL-Skyport/Phottix (2.4GHz)

  • Sensor

    SPD

  • Shutter Angles Range (Ambient Light)

    4 to 358 deg. plus other 20 settings (customized from 0.001 to 360)

  • Shutter Speeds Range

    Ambient Light: 30m to 1/64,000s in 1, 1/2, 1/3 step (Analog scale: 4s to 1/2,000s in 1/3 step)
    Flash Light: 30m to 1/16,000s in 1, 1/2, 1/3 step

  • Tripod Socket

    Yes

  • Water Resistance

    Yes

  • Dimensions (L x H x W)

    6.93 x 1.93 x 3.7" (17.6 x 4.9 x 9.39cm)

  • Weight

    8.48 oz (240.4g)

  • UPC Code

    4962294011987

About Sekonic L-858D-U SPEEDMASTER

FEATURED REVIEWS

Light meter integration with Godox/Flashpoint strobes.

By SRINIVAS G.

Excellent integration of light meter with Godox lighting. You can control al the lights, ratios, modeling lamp and adjust the ratios as desired. The Godox/Flashpoint remote is just for triggering the lights along with shutter of the camera. Photo shoot workflow has become a breeze.

Excelente producto!!!!

By NEFTALI T.

Excelente producto, facilita mucho el flujo de trabajo por todas las opciones que tiene al momento de hacer la medición de luz. Recomendado al 100%, si lo necesitas

The Sekonic L-858D-U is kitted with the RT-20PW transmitter module. The RT-20PW is a user-replaceable radio module that fits neatly next to the batteries in the SPEEDMASTER L-858D Light Meter.

This kit brings a integrated light metering workflow to PocketWizard users, making it possible for them to measure effortlessly, control, and analyze the characteristics of flash like never before. The Sekonic RT-20PW simplifies the process of lighting a portrait, analyzing a scene and helping you quickly dial in your lighting recipe to get to your final image with exacting precision.

Sekonic Speedmaster L-858D-U is the world's first multi-function, multi-brand wireless triggering light meter. It is the first of its kind capable of measuring flash duration and brief flash bursts like you find from HSS (High Speed Sync) for precision flash control.

Features

Radio Compatibility
The L-858D with the RT-20PW transmitter module provides multiple functions beyond triggering, including access to 32 channels and up to four zones and support for the ControlTL system enabling user to remotely control flash power and turn the modeling light on and off.

Next Level Flash Analysis
PocketWizard users can more easily measure the percentage of flash in their images to maintain the desired mix of ambient and flash. Measure flash duration as well to know how much stopping power your lights have to freeze the splash from their favorite product shot, or the pose of a ballet dancer.

Sekonic L-858D-U SPEEDMASTER Features

  • Incident Metering for Ambient & Flash
  • 1 Degree 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 For PocketWizard Elinchrom and Phottix

Key Features

  • Incident Metering for Ambient & Flash
  • 1 Degree 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

What's in the box:

  • RT-20PW Transmitter Module
  • Lens Cap
  • Strap
  • Soft Case
  • Start Up Guide
  • Anti-Glare Film
  • Sekonic 1 Year Limited Warranty with 2 Year Extension Upon Online Registration