Sekonic L-308S FLASHMATE Light Meter


Key Features

Incident Metering for Ambient & Flash

40° Reflected Light Metering

Range: 0 to 19.9 EV at ISO 100

Flash Range: f/1.4 to f/90.9 at ISO 100

Cine Setting: Frame Rates from 8-128 fps

Repeat Accuracy: ±0.1 EV or Less

Compact Size with LCD Screen

PC Sync Terminal & Cordless Flash Option

Runs on One AA Battery

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Product Overview

The pocket-sized Sekonic L-308S Series FLASHMATE is the smallest and lightest digital light meter in the Sekonic line-up. It is designed to read ambient or flash exposures in either reflected or incident modes, and it displays accurate exposure readings in full, half, or third-stop increments to mirror the exposure settings of today's DSLR and film cameras.

The L-308S Series delivers accurate exposure readings in full-, half-, or third-stop increments to mirror the exposure displays of most popular cameras. When set to full-stop mode, exposures are displayed in tenth-stop increments with a repeat accuracy of +/- 0.1 EV.

International Catalog 
International Catalog Info 

International Catalog Number
JE11 (CE - Designated L-308S, European Manual)
JE1G (China - Designated L-308S, Chinese Manual)
JE1J (Korea - Designated L-308S, English Manual)
US Catalog Number
401-309 (JE1L, US only - Designated L-308S, English Manual)

Measuring System 
Exposure Meter Incident light: fixed head, lumidisc removable, Reflected light: Switching, 40 deg. with built-in lens

Measuring Modes Ambient Light 

T priority, EV

Measuring Modes Flash 

Cordless, Cord-in (PC)

Measuring Range (ISO 100) Ambient Incident Light 

0 to 19.9EV

Measuring Range (ISO 100) Ambient Reflected Light 

0 to 19.9EV

Measuring Range Flash Incident Light 

F1.4 to F90.9

Measuring Range Flash Reflected Light 

F1.4 to F90.9

ISO Range 
ISO 3 to 8,000
Aperture Range (Ambient Light) 
F0.5 to 90.9 in 1, 1/2, 1/3 step
Aperture Range (Flash Light) 
F0.5 to 90.9 in 1, 1/2, 1/3 step
Shutter Speeds Range (Ambient Light) 
Photo Mode: 60s to 1/8,000s
Shutter Speeds Range (Flash Light) 
1s to 1/500s in 1, 1/2, 1/3 step
Frame Rate Range (Ambient Light) 
8, 12, 16, 18, 24, 25, 30, 32, 48, 50, 60, 64, 96, 100, 120, 128
EV Range (Ambient Light) 
-5 to 26.2
Calibration Compensation 
Custom Settings 

Operating Temperature 
0 to 40 deg. C
Storage Temperature 
-20 to 60 deg. C
Power source 
1.5V x 1 (AA battery)
B&W, Segment type
Weight (lbs.) 
Weight (KG) 
Product Length Inches 
Product Width Inches 
Product Height Inches 

Lumidisc (with pouch)

soft case, strap

synchro terminal cap

AA battery


Operating Manual


Startup Guide