Sekonic L-308S Flashmate 

Pocket-sized. Sekonic's smallest and lightest digital light meter. 

Designed to read ambient or flash exposures in reflected or incident modes. Delivers accurate exposure readings in full, half, or third-stop increments to mirror exposure displays of most cameras.

When set to full-stop mode, exposures are displayed in tenth-stop increments with a repeat accuracy of +/- 0.1 EV.

Flash exposures are displayed from f/1.4 to f/90.9 (or about f/124). ISO sensitivity is set from 3 to 8000 in third-stop increments. For cinema applications, the L-308S can be programmed to display exposure times from 8 to 128 frames-per-second.

Type digital exposure meter for ambient and flash light 

Light Receiving Method Incident light and reflected light 

Incident Light Convertible to flat diffuser (Lumisphere slides to expose Lumidisc)  

Reflected Light Light receiving angle 40° (Lumigrid) 

Light Receptor Element Silicon photo diode 


Metering Modes 

Ambient Light Shutter priority metering EV metering 

Flash With synchro cord / Without synchro cord


Measuring Range (ISO 100) 

Ambient Light Incident light EV 0 to EV 19.9 / Reflected light EV 0 to EV 19.9 (with 40° Lumigrid) 

Flash Incident light f/1.4 to f/90.9 (approx. f/124) / Reflected light f/1.4 to f/90.9 (approx. f/124) with 40° Lumigrid 

Repeat Accuracy +/- 0.1 EV or less 

Calibration Constant Incident light metering: Lumisphere C = 340 / Lumidisc C = 250 / Reflected light metering: K = 12.5 

Film Speed ISO 3 to 8000 (in 1/3 steps) 

Shutter Speeds Ambient light: 60 sec