LIT Systems LIT DUO 1 Digital Light Meter

About: LIT Systems LIT DUO 1 Digital Light Meter

LIT DUO 1 is a modern all-in-one light meter for filmmakers, photographers, video creators, lighting designers, and other professionals who need fast, reliable, and intuitive control of light. It combines the essential tools for exposure, flash, color temperature, spectrum, illuminance, and flicker measurement in one compact handheld device.

• All-in-one versatility: LIT DUO 1 combines the essential jobs traditionally split across multiple devices into one meter.
• Fast and responsive operation: Designed for quick measuring and smooth use on set, in studio, and on location.
• Easy to learn, joyful to use: A practical interface and tactile controls help make advanced metering more approachable.
• Robust, compact build: Pocket-sized and production-ready, with durable construction suited to regular professional use.
• Keeps getting better: Firmware updates, app connectivity, and ongoing software development help keep the product improving over time.

LIT DUO 1 is designed to replace slower, more fragmented metering workflows with one compact and easy-to-use device. It brings together the core tools modern creators need for exposure, flash, color, illuminance, spectrum, and flicker analysis, while keeping operation fast, practical, and easy to learn.

Built for real-world production use, LIT DUO 1 combines tactile controls, a compact form factor, durable construction, modern connectivity, and an actively evolving software.

It is made for users who want professional capability without complicated operation.

Work as the masters do

4 reasons why creative pros Worldwide use LIT DUO 1 in filmmaking, video, stage, and other situations where light is essential:

• Create the work of your life: Turn your creative vision into a reality by having total control over the light. Achieve consistent look and have confidence when there's no room for error.
• Pro techniques without the complexity: Powerful functions enabling hollywood-level results. But simple and intuitive for beginners to use. Get inspired!
• Faster and efficient workflow: Save time on setup, the shoot, and at post-production. Skip past trial and error.
• Keep evolving and growing: Aim for the sky and LIT DUO 1 will support you all the way on your journey.

Game changer

Have you ever lost precious time during a shoot, trying to figure out your meter’s complex menu or functions? Or missed intended setting due to touch screen?

Did your light meter break down due to plastic and bulky build? Or does it feel like it will any minute? Are you carrying around two meters - color and exposure?

• All-in-one innovation: World's only light meter covering all needs of content creators and creative professionals.
• Intuitive and easy-to-use: Smart menu on a large LCD display make DUO 1 easy-to-learn and joyful-to-use.
• Fast and responsive: Instant turn-on and ready-to-measure. Tactile button controls work with gloves.
• Bulletproof: CNC milled grey anodysed aluminum front. Durable plastic back.
• Always with you: Super compact size, with form factor optimised for single-hand use.
• No such thing as minor detail: Everything from icons to button clicks is designed to make your job easier.

Style your light to perfection

7 intuitive measuring modes (and sub-functions) will help you elevate your visual style in 4 ways:

• Craft emotions in your scenes by controlling Color Temperature and WB. Mix or blend different lights together and tune White Balance - with consistency. For any type of light and camera.
• Creatively alter the look and feel by matching and controlling Full Colors. Tune color contrasts. Blend your lighting with existing light sources or re-create certain look. Works with all RGB lights or color filters.
• Master cinematic looks by controlling Exposure and Light Ratios. Get consistent shots and breezy post-production. Light (or scout) locations without camera. Works with continuous light for photo or video use-cases.
• Fully evaluate any light by using Illuminance, Spectrum, or Flicker mode.

Insanely accurate

• Spectrum (14-channels) and illuminance sensor
  • Measures any type of (visible) light source.
  • CT, CRI, Ra, identify light sources, ...
  • Interference band-pass filter technology.
• Fast silicone photodiode
  • Human eye response (CIE V(λ)).
  • High sampling rate.
  • Dynamic range 0.01-250,000 lux.
• High tech meets low light: Market-leading low light performance: Up to 2x better sensitivity and up to 4x faster measuring times compared to the closest competitor products.
• Expertly calibrated: Every LIT light meter goes through the state-of-the-art traceable light intensity and spectrum calibration. Unique light profile is stored locally on device and in the Cloud.

One more thing: Light meter at your fingertips

Bluetooth connectivity unlocks full remote control over your DUO 1. And delivers seamless updates.

Specifications

• Ambient exposure
  • Sensor type: Fast-response Silicon photo diode, CIE spectral luminous  efficiency
  • Sensitivity: Visible light (Human eye response)
  • Measuring range: -4EV to 20 EV at ISO 100
  • Accuracy: +/- 0.1 EV
  • Angular response: Cardioid-type response (Dome Diffuser)
• Spectrum & Color temperature
  • Sensor type: Multi spectral sensor
  • Sensitivity: 14 optical channels distributed over Visible light, including XYZ and one in NIR
  • ‍Measuring range: 0.15 lux - 250,000 lux
  • Accuracy: +/- 2 %
  • Angular response: Cosine-type response (Flat Diffuser)
• ​Illuminance
  • Sensor type: Multi spectral sensor
  • Sensitivity: 14 optical channels distributed over Visible light, including XYZ and one in NIR
  • ‍Measuring range: 1600 - 18000 K
  • Accuracy and Repeatability: +/- 2% of Kelvin value, +/- 10 K
  • Angular response: Cosine-type response (Flat Diffuser)
• Flickering
  • Sensor type: Fast-response Silicon photo diode
  • Sensitivity: 0.1 – 15,000 lux
  • Measuring range: 0.1 – 35,000 Hz
• Power
  • Power source: 3 x AAA batteries, replaceable
  • Battery compatibility: Alkaline, Lithium, or NiMH
  • USB power: Supported via USB-C, 5.0 VDC
  • Battery charging: NiMH AAA charging supported in-device via USB-C
  • Battery life: 40+ hours of mixed use
• ​Wireless
  • Bluetooth range: 40-60 meters / 130-200 feet (depending on device orientation)
• ​Operating conditions
  • Operating temperature: 0°C to +30°C (+32°F to +86°F)
• Physical
  • Dimensions: 5.2 x 1.2 x 2.0 in (131 x 30 x 51 mm)
    • Body thickness:  0.8 in (20 mm)
  • Weight: 0.33 lbs (150 g)

What's in the Box

• LIT DUO 1
• Protective case
• Neck strap
• Quick Start and Safety Guide