• Exposures accurate down to a tenth-of-a-stop for both ambient and electronic flash light readings in full-stop mode.
• At ISO 100 the ambient EV range is 0 to 19.9 flash f/stops range from f/1.0 to f/90.9 with a shutter-speed span of 60-seconds to 1/8000th-of-a-second (1 sec to 1/500th for flash).
• Photo Mode: for still image photographers featuring shutter or aperture priority display of a full range of ambient and flash functions including cord and cordless flash measurement
• HD Cine Mode: perfect for DSLR and mirrorless videographers who need to take exposure readings and control light using shutter speeds and frame rates
• Cine Mode: designed for use with cinema grade cameras, allows users to select from the most useful frame rates and shutter angles for exposure control with one-tenth stop accuracy.

From the manufacturer

 

 

The Sekonic L-308X-U Flashmate

A pocket-sized and exceptionally accurate light meter that holds a legacy of accuracy. The Flashmate L-308X-U 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.

 

 

This light meter features three exciting ways to measure

Slide the built-in lumisphere to the left until it clicks into position for incident light measurement.	Slide the built-in lumisphere to the right until it clicks into position for reflected light measurement.	Slide the built-in lumisphere to the right and insert the lumidisc (optional) into the slot over the light receptor lens to measure flat subjects or lighting contrast with precision.

 

 

Pocketsized and Powerful

The L-308X-U 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-U delivers with a rating of <0.1 EV on repeat exposures.

 

 

Photo Mode

The L-308X-U offers full exposure control for photographers on-location or in the studio. Measurement data for flash and ambient light readings are clearly displayed on screen, as well as ambient EV measurement. In addition to Shutter Priority Mode, the new Aperture Priority Mode offers photographers care free measurements where depth-of-field is critical.

HD Cine Mode

Gives cinematographers a compact solution for scouting locations or as a quick go-to solution while they are on set. The 308X-U lets users select from a range of frame rates and shutter angles, while measuring accurately, to within one-tenth of a stop. Also, the addition of ISO 850 greatly assists cinematographers by giving them the option of taking measurements in the native ISOs of many of today's professional cinema cameras.

Cine Mode

Designed with the professional in mind, the FLASHMATE L-308X-U can take on the challenges of digital cinematography. Select from the right combination of frame rates and shutter angles to achieve the exposure control necessary with one-tenth stop accuracy. Truly universal, the FLASHMATE L-308X-U offers Lux (lx) and foot-candle (fc) readout enabling a quick set up of lighting in a compact, affordable and easy-to use design.