The Marelux Artemis 4500 RMT 2.0 is a compact 4500-lumen underwater video light built around a broad 120° beam, 5000K color temperature and CRI 95 output. Its biggest advantage is that it can do more than illuminate a subject: depending on which firmware version you choose, it can also become part of a Marelux wireless video-light or strobe-triggering system.

For underwater shooters, that makes the Artemis especially interesting for wide-angle video, off-camera lighting, creative remote-camera work and Marelux housing systems where reducing cables and moving lights away from the housing can simplify the rig and help control backscatter.

• Best for: Marelux system owners, underwater video shooters and photographers experimenting with off-camera lighting.
• Main advantage: 4500-lumen white output, 120° beam, CRI 95 and seven brightness levels in a compact light.
• Choose the correct version: 2.0-V is designed for remote video-light control; 2.0-S is designed for wireless strobe triggering.
• System advantage: The light can participate in Marelux remote-control workflows rather than functioning only as a conventional video light.
• Tradeoff: Maximum white-light runtime is 45 minutes, so photographers doing multiple long dives should plan spare 18650 batteries and charging accordingly.
• Compatibility warning: Wireless functions depend on the specific Marelux equipment and firmware version being used. Compatibility varies by system — contact Bluewater Photo to confirm your setup.

Premium 4500-Lumen COB Video Light: The heart of the Artemis features a single high-quality Chip-on-Board (COB) LED source that delivers 4,500 lumens of light across a wide 120 degrees beam angle. This provides smooth, edge-to-edge coverage perfect for spotting and short-to-mid-range underwater videography.

• CRI 95 (Color Rendering Index): A higher CRI means the artificial light spectrum closely mimics natural sunlight. With a rating of 95, this light accurately restores the true, vibrant colors of your underwater subjects.

• 5000K Color Temperature: Water rapidly absorbs lower-frequency, long-wavelength colors like red and yellow while allowing blue and green to pass through. The slightly warm 5000K temperature perfectly counteracts this natural filtration, restoring a natural, balanced look to your footage.

Dual-Purpose Targeting & Signal LEDs: The central COB light is symmetrically ringed by small blue LEDs. These serve a dual purpose:

• Fluorescence Targeting: They emit a specialized blue light that makes the natural bio-luminescence of various sea creatures pop.

• Wireless Shutter Control: They act as encrypted signal emitters for remote shutter control, allowing you to trigger a camera house several meters away.

Optical Signal Domes: Flanking the main body are two fisheye domes housing massive 40-watt blue LED emitters. These cast encrypted blue signals across a wide  arc, capable of penetrating water up to 15 meters away at standard depths (10–20 meters), reaching the strobe or video light, provide reliable remote control.

• On the S-Version: Triggers off-camera strobes wirelessly with zero lag.

• On the V-Version: Remotely adjusts the power levels of Artemis video lights.

• Both signals are encrypted to ensure that strobes and video lights are not falsely triggered or disrupted by ambient sunlight or other nearby light sources." 

Marelux Artemis 4500 RMT 2.0 Quick Specs

Why the Marelux Artemis 4500 RMT 2.0 Stands Out

Most compact underwater video lights are exactly that: lights. The Artemis 4500 RMT 2.0 is more interesting when you are building a Marelux system because its wireless functionality can extend beyond the camera tray.

The 120° beam and CRI 95 output make it useful as a conventional video light, but the V and S versions can also support remote lighting strategies that are difficult to execute with a standard light. That matters when you want to move illumination away from the lens axis, light a wreck interior, create background separation or fire compatible strobes without running a conventional optical connection all the way to the light position.

Marelux Artemis 4500 RMT 2.0 vs. Other Compact Underwater Video Lights

These lights overlap in output, but they solve different problems. Choose based on your shooting workflow rather than lumen output alone.

Why Buy Marelux from Bluewater Photo?

Underwater camera equipment is rarely a one-part purchase. Housing controls, ports, lenses, flash triggers, strobes, batteries and lighting all need to work together, and that is where buying from a specialist matters.

The Artemis uses an anodized aluminum-alloy body and carries a 100 m depth rating, while Marelux has built a broad underwater imaging system that includes housings, strobes, ports, optics and remote-control accessories.

Content reviewed by Bluewater Photo staff, recognized as the #1 online retailer specializing in underwater photography and scuba diving equipment, with real-world experience supporting, selling, and configuring underwater camera systems.

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