Sekonic Flashmate Posemeter/Flashmeter SE L308X


• Photographers – Ambient light meter, Cordless flash meter, Corded flash meter
• Film Makers – Ambient light meter, LUX meter, Foot candle meter
• Backlight LCD display ensures you can use it in all lighting conditions
• ISO 850 added for film makers
• Sekonic Flashmate L-308X, soft case, strap, synchro terminal cap, Instructions

Sekonic Flashmate Posemeter/Flashmeter SE L308X

Sekonic Flashmate Posemeter/Flashmeter SE L308X
Product Code: SE L308X
Barcode/EAN: 4962294012007

L-308X Flashmate

A legacy of accuracy pocket-sized and exceptionally accurate, the Flashmate L-308X light meter from Sekonic is a compact tool for metering both ambient and flash lighting as well as working in video with dedicated Cine and HD Cine modes. Equipped with a sliding lumisphere, the L-308X is able to measure ambient light as well as reflected light via a lens with a 40° reception angle. This meter also has a wide metering range; from 0 to 19.9 EV at ISO 100, and can work with flash within a range of f/1.0 to f/90.9 at ISO 100. Repeat accuracy is also important when metering, which the L-308X delivers with a rating of <0.1 EV on repeat exposures.

Maximum versatility last year, Sekonic introduced their groundbreaking flag ship light meter, the Speedmaster L-858D-U. By merging functionality for both photography and cinematography into one light meter, Sekonic created a powerful and invaluable tool for image makers of every kind. Now Sekonic is bringing that philosophy to the immensely popular L-308 series with the new Flashmate L-308X.


Type: 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


Ambient Light:

Shutter speed priority mode,  Aperture priority mode, EV mode

Flash light: Cordless flash mode, Cord flash mode

HD Cine Mode: Ambient lightShutter speed priority mode, Frame rate setting mode, Simplified illuminance mode

CINE Mode: Ambient lightFrame 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 190,000 lx - 0.23 to 17,000 fc

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), ISO 850

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

 HD_CINE Mode Ambient light 1/8 sec to 1/8,000 sec (in 1, 1/2, 1/3 step) plus 1/24, 1/25, 1/30, 1/48, 1/50,

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

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

Flash Shutter speed

Shutter angle 45, 90, 180, 270, 360 degrees

EV 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)

BatteryType-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)

Storage Standard accessories Soft case, Strap, Synchro terminal cap, Startup guide, Safety precaution