Sekonic L-308X-U Flashmate Light Meter

SKU #:401-305 MFR #:401-305
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Sekonic L-308X-U Flashmate Light Meter
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Sekonic L-308X-U Flashmate Light Meter

The Sekonic L-308X-U Flashmate Light Meter is a compact tool for metering both ambient and flash lighting as well as working in video with dedicated Cine and HD Cine modes.quipped with a sliding lumisphere, the L-308X is capable of measuring incident or reflected light via a lens with a 40° reception angle. It offers a wide metering range from 0 to 19.9 EV at ISO 100, working with exposure times as low as 1/8000 all the way up to 60 seconds; it also has an equally broad flash range from f/1.0 to f/90.9 at ISO 100.

The L-308X features three specialized metering modes: a Photo mode for still shooting with aperture and shutter priority, a Cine mode for selecting frame rates between 8-128 fps with one-tenth of a stop accuracy, and an HD Cine mode for those shooting video with DSLR or mirrorless cameras. These settings can easily be viewed on the backlit LCD display, which can be customized to your liking and automatically lights up when working at 5 EV or darker. Other features include a PC sync terminal and a cordless flash measuring option. The L-308X-U weighs approximately 3.5 oz and runs on a single AA battery.


  • Incident Metering for Ambient & Flash
  • 40° Reflected Light Metering
  • Photo, Cine, and HD Cine Metering Modes
  • Customizable LCD with Auto Backlight
  • Range: 0 to 19.9 EV at ISO 100
  • Flash Range: f/1.0 to f/90.9 at ISO 100
  • Exposure Time: 1/8000 to 60 Sec
  • Repeat Accuracy: ±0.1 EV or Less
  • PC Sync Terminal & Cordless Flash Option
  • Runs on One AA Battery
Digital meter, for flash and ambient light
Receptor Head:
Sliding lumisphere
Receiving Angle:
Measuring Modes:
Photo: ambient light, cord flash, cordless flash, shutter speed priority, aperture priority, and EV mode | Cine: frame rate priority, shutter angle setting, and simplified illuminance mode | HD Cine: shutter speed priority, frame rate setting, and si
Measuring Range:
Ambient (ISO 100): 0 to 19.9 EV | Flash (ISO 100): f/1.0 to f/90.9
ISO Range:
3 to 8000 (in 1/3 steps), plus 850
Shutter Speed Range:
Ambient: 1/8000 to 60 seconds | Flash: 1/500 to 1 second
Frame Rate Range:
8 to 128 fps
Repeat Accuracy:
±0.1 EV
Segment-type LCD with backlight
1 x PC sync terminal
Power Source:
1 x AA battery (1.5 V)
2.5 x 4.3 x 0.9"
3.5 oz
  • Sekonic L-308X-U Flashmate Light Meter
  • Case for L-308 Series Light Meters
  • Strap for Most Sekonic Light Meters (Replacement)
  • Sync Terminal Cap
  • Limited 1-Year Warranty
  • Limited 2-Year Warranty Extension with Online Registration