Ulanzi L023 40W Pro COB Fill Light — professional light for photo and video

The perfect solution for shooting in any conditions
The Ulanzi L023 40W Pro COB Fill Light is a modern on-camera light designed for photographers, videographers, streamers, and bloggers who need quality lighting in a compact format. Its main advantage is the combination of 40W of power, high brightness, color accuracy, and mobility , which allows you to create professional content in and out of the studio.
The use of COB LED (Chip On Board) technology ensures high efficiency, uniform lighting, and stable light output without flickering. This makes the Ulanzi L023 a reliable tool for both commercial projects and personal creative tasks.
Main advantages of Ulanzi L023
1. Light power and accuracy
The lamp produces 40 W of power , creating a bright and uniform light flux. The maximum illumination reaches 13,150 lux at a distance of 0.5 m using a reflector. This is enough for both portrait and object photography, as well as for organizing small studio scenes.
2. Wide range of color temperatures
The user can flexibly adjust the temperature from 2500K (warm shade) to 6500K (daylight). This range allows you to adapt the light to any environment and create the desired atmosphere - from a cozy home to a cold office or studio.
3. High CRI and TLCI
The color rendering index CRI ≥95+ and TLCI ≥96+ guarantee accurate color reproduction without distortion. This is especially important for shooting where colors must remain as natural as possible: interviews, commercials, product photography or beauty photography.
4. Compactness and lightness
The dimensions of the lamp are 105 × 85 × 85 mm , weight - only 490 g. This form factor allows you to take it on a business trip, trip or field shooting without additional difficulties. Despite its compactness, the device is not inferior to larger studio models in terms of lighting quality.
5. Autonomous operation thanks to the built-in battery
Ulanzi L023 is equipped with a built-in 3400 mAh battery , making it completely autonomous.
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At 50 watts, it works for approximately 50 minutes.
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At 40 W - up to 1 hour 10 minutes.
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At minimum brightness - up to 3 hours.
Charging is via USB-C PD ; a full cycle takes up to 3 hours when using a 65W/20V charger. An important feature is the ability to work while charging and be powered by a power bank, which makes the device versatile for any conditions.
6. Compatible with Mini Bowens
The light supports the Mini Bowens mounting system, which allows you to install various attachments: reflectors, diffusers, compact softboxes. This significantly expands creative possibilities and makes the light useful in any scenario.
7. Control and display
The lamp has intuitive controls: buttons and a knob , as well as an informative display that displays all key parameters - brightness, temperature, charge level. This ensures quick setup even during shooting.

8. Special effects for creativity
The model supports 8 built-in lighting effects , including: imitation of lightning, TV, candle, fireworks, etc. They allow you to create atmospheric scenes without additional equipment and significantly save time during work.
Technical specifications of Ulanzi L023
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LED type: COB LED
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Power: 40 W
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Color temperature: 2500–6500 K
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CRI: ≥95+
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TLCI: ≥96+
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Brightness: 0–100%
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Maximum illumination: 13,150 lux (0.5 m, with reflector)
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Beam angle: 120°
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Battery: 3400 mAh (built-in)
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Working hours:
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50 min (50 W)
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1 hour 10 minutes (40 W)
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up to 3 hours (minimum brightness)
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Charging: USB-C PD, up to 3 hours (65W/20V)
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Work while charging: yes
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Mounting: 1/4" thread
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Accessory mount: Mini Bowens
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Effects: 8 modes
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Dimensions: 105 × 85 × 85 mm
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Weight: 490 g
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Body color: black
Equipment
In the box you will receive:
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Ulanzi L023 on-camera light,
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reflector,
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diffuser,
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protective cover for transportation,
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instructions and warranty card.
Additional accessories, such as a power supply, battery, reflector, softbox, stand, are sold separately.
Where and how to use Ulanzi L023
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Portrait photography - soft and even lighting of the face.
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Video interviews — creating a professional atmosphere without additional spotlights.
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Vlogging and streaming are a bright but not blinding light for live broadcasts.
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Product photography - an emphasis on the details of products, jewelry, and cosmetics.
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Creative shooting — using dynamic lighting effects to create unique content.
Conclusion
The Ulanzi L023 40W Pro COB Fill Light is a combination of power, compactness and versatility. Its built-in battery, Mini Bowens compatibility, high light quality and a set of special effects make it the ideal solution for professionals and amateurs who value quality results.
Thanks to this lamp, you can create bright, stylish and professional content without much effort.
Main attributes Portable LED illuminator ULANZI L023 PRO 40w COB Light
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