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Sekonic L-308X-U Flashmate Light Meter

  • mfr: 401-305
  • SKU: 401-305
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    *Orders placed before 3 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

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Product highlights

  • Photo, HD cine, and cine metering modes
  • Three Ways to Measure: Lumisphere, lens, and lumidisc
  • Accurate measurements of both ambient and reflected light
  • Lens with a 40 degree reception angle
  • Flash range: f/1.0 to f/90.9 at ISO 100
  • Use one meter for both photography and cinematography
  • Exposure control with one-tenth stop accuracy

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Sekonic L-308X-U Flashmate Light Meter

The Sekonic L-308X-U Flashmate Light Meter is the perfect solution for both accurate and portable light measurement. The L-308X takes accurate measurements of both ambient and reflected light using its sliding lumisphere, with a lens with a 40 degree reception angle. The metering range is very wide; from 0 to 19.9 EV at ISO 100. The meter can also work with flash within f/1.0 to f/90.9 at ISO 100. The Sekonic light meter delivers high repeat accuracy with a <0.1 EV rating on repeat exposures.

The Flashmate L-308X-U combines functionality for both photography and cinematography into one light meter. Image makers of every kind will find the Sekonic L-308X-U to be a powerful and invaluable tool for their profession or hobby.

Three Meters in One

The Sekonic L-308X-U features 3 meters in one, with three metering modes.

The Photo Mode gives photographers full exposure control wherever they might be, be it on location or in the studio. The screen clearly displays measurement data for flash and ambient light readings, including ambient EV measurement. The new Aperture Priority Mode, in addition to Shutter Priority mode, allows photographers to take easy measurements where depth-of-field is critical.

The HD Cine Mode allows cinematographers to quickly scout locations and is quick solution on set, too. Select from a range of frame rates and shutter angles with the 308X-U, taking accurate measurements to within one-tenth of a stop. Take measurements in the native ISOs of many of today’s professional cinema cameras with ISO 850.

The Cine Mode gives you the ability to take on the challenge of digital cinematography - it's designed with the professional in mind. You can achieve necessary exposure control with one-tenth stop accuracy by selecting the right combination of frame rates and shutter angles. The FLASHMATE L-308X offers Lux (lx) and foot-candle (fc) readout enabling you to quickly set lighting compactly, affordably, and with an easy-to-use design.

Three Ways to Measure

Take incident light readings for nearly foolproof exposure readings with the Lumisphere to quickly get the scene lit. The Lumidisc is perfect for lighting green screens, adjusting ratios and taking lux and foot-candle measurements. Reflected light readings enable measuring the brightness for subject tones, gray cards, light sources or window light.

Other valuable features include:

  • Updated Available ISOs: Now includes ISO 850 the native ISO of some of today's most popular video cameras.
  • Illuminated Display: Backlight LCD turns on automatically under EV5.
  • Calibration Compensation: Adjust the L-308X-U to your Film or Digital camera’s exposure or matching the L-308X to other hand-held meters. (+/-1.0EV in 0.1 step)
  • Custom Setting: Three custom settings are available to select display mode, increment of measurement and unit of illuminance (lx or fc) to fit to your camera and metering requirements.
  • Illuminance Measurement: Lux(lx) and foot-candle(fc) display is especially used for cinematogaraphy, theatrical and other applications that require precise control of light source brightness. Either no display, lux or foot-candle is selectable in custom setting.


Light Fixture
Fixture Dimensions Not Available
Fixture Weight Not Available
Auto Zoom Head No
Weight Approx. 80g (without battery)
Battery Type AA
AC Input Power Not Available


Customer Questions
No Questions


Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges. 
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact [email protected] with your order number and a description of the damage. 
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at [email protected], or send us a message here.  
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead. 
If you ordered a kit, you must return all components and accessories to receive a full refund. 
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund. 
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900. 
Most items can be returned within 30 days for a full refund. Click here to read our full return policy. 

Shipping and Returns

Same Day Shipping

All orders placed by 4PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

Free Two-Day Shipping

We offer free expedited shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).

Flexible, Easy Returns

If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.

Ratings and reviews

Sekonic L-308X-U Flashmate Light Meter

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

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