Whether you’re shooting photos or videos, the Sekonic Flashmate L-308X Light Meter is a handy tool to achieve the perfect lighting every time. Capable of measuring flash and ambient lighting, the unit also has a wide metering range from 0 to 19.9 EV at ISO 100. The Flashmate also includes various options like photo and cine modes, making it easy to achieve stunning results whether you’re a pro on the go or a beginner looking for a hand. Other small touches, like the automatic backlit screen, PC sync terminal, and compact pocket friendly design make the Sekonic L-308X the perfect companion to photographers and filmmakers.

Accurately Measure Reflected and Ambient Light

Featuring a 40° receiving angle, the Sekonic L-308X lumisphere can switch between measuring incident light on people and objects or reflected light from faraway subjects and landscapes simply by sliding it left or right. It’s also compatible with Lumidisc (separately available) to accurately measure light off flat objects, green screens, and adjust between multiple light sources.

Three Lighting Assist Modes

Take event photography and beautifully lit videos with accuracy thanks to the three assist modes.

Photo Mode: Whether you’re shooting in studio or at outdoors, this mode will help calculate the right settings in Shutter Speed, Aperture Priority or EV Mode based on ambient light. Cord Flash Mode and Cordless Flash Mode are also available to suit different lighting setups.

Cine Mode: This offers cinematographers the confidence to set shutter angles to a one-tenth stop accuracy. The Frame Rate Priority Mode also allows you to select the frame rate from 8 to 128fps. It also displays both Lux (lx) and foot-candle (fc) readouts for speed and precision.

HD Cine Mode: DSLR and mirrorless videography is easier thanks to this mode’s high accuracy in measuring shutter speed, frame rate, and aperture readings.

Wide 0 to 19.9 EV Metering Range

The L308X Flashmate is easily works with exposure times from 1/8000 to 60 seconds. At ISO 100, it can measure ambient light from 0 to 19.9 EV and flash lighting (cordless or via sync terminal connection) from f/1.0 to f/90.9 with excellent accuracy. It delivers aCustomisable LCD with Backlight Easily visible in most lighting conditions, the LCD display is customisable to user preference. Backlit, it automatically switches on in conditions under 5 EV and turns off after 10 seconds of idle time to maximise battery life.

Powered By One AA Battery

Powered by only one AA battery, the Sekonic light meter is a perfect pocket accessory. The battery life is easy to track thanks to the display icon while the meter itself automatically turns off after 4 minutes of idle time so you can keep using it throughout your whole shoot.

Neck Strap and Soft Case Included

Take the Sekonic Flashmate L-308X with you on all your outings using the included strap and soft case, perfect for protection against damage in transport and storage.


Digital light meter for ambient and flash light

Light Receiving Method:

Incident light and reflected light

Light receiving section:

Incident light: Lumisphere, Lumidisc (optional accessory)
Reflected light: Lens (light receiving angle of 40°)

Light Receptor Element:

Silicone photo diode

Measuring Mode

PHOTO Mode: Ambient Light

Shutter speed priority mode,

Aperture priority mode, EV mode

PHOTO Mode: Flash light

Cordless flash mode, Cord flash mode

HD Cine Mode: Ambient light

Shutter speed priority mode,

Frame rate setting mode,

Simplified illuminance mode

CINE Mode: Ambient light

Frame rate priority mode,

Shutter angle setting mode,

Simplified illuminance mode

Measuring Range (ISO100)

Ambient light

Incident light - EV0 to EV19.9

Reflected light - EV0 to EV19.9

Flash light

Incident light - F No. 1.0 to F No. 90.9

Reflected light - F No. 1.0 to F No. 90.9


Incident light - 2.50 to 190,000lx

Reflected light - 0.23 to 17,000fc

Repeated Accuracy

±0.1 EV or less

Calibration Constant

Incident light metering - Lumisphere C=340,

Lumidisc C=250

Reflected light metering - K=12.5

Display Range

ISO Sensitivity

ISO 3 to 8,000 (in 1/3 step), ISO850

Shutter speed - PHOTO Mode

Ambient light: 60 sec to 1/8,000 sec

(in 1/ 1/2 1/3 step)

Flash light: 1 sec to 1/500 sec

(in 1, 1/2, 1/3 step)

plus 1/75, 1/80, 1/90, 1/100 sec

Shutter speed - HD CINE Mode

Ambient light 1/8 sec to 1/8000 sec

Frame rate (f/s)

8, 12, 16, 18,24, 25, 30, 32, 48, 50 60, 64, 96, 100, 120, 128 f/s


F No. 0.5 to F No. 90.9 (in 1, 1/2, 1/3 step)


Shutter speed

Shutter angle

45, 90, 180, 270, 360 degrees


Incident light: EV-6.0 to EV27.3

(in 1/10 step)

Reflected light: EV-6.0 to EV27.3

(in 1/10 step)


Out of display or
measurement range

E.U. (Exposure Under) or E.O. (Exposure Over) indication

Battery power indicator display

3 level status icon

Auto power off

approx. 4 min after last operation

Backlight LCD

Automatic illumination (under EV5)

Custom settings

3 item settings

Calibration compensation

-1.0 to +1.0EV (in 1/10 step)


Type AA 1.5 volt battery

Operating temperature range

0? to +40?

Storage temperature range

-20? to +60?

Storage Dimensions

Approx. 63(W) x 110(H) x 22(D) mm

Storage Weight

Approx. 80g (without battery)

* Specifications subject to change by the manufacturer without notice

  • Sekonic Exposure Meter L-308X Flashmate
  • Soft Carry Case
  • Neck Strap (Fits most Sekonic Light Meters)
  • Sync Terminal Cap


* Dispatch timeframes are indications only and may vary for multiple quantities. Timeframes are updated regularly during normal business hours.