Diffusers & filters

Diffusers for underwater lighting

Diffusers are front-mounted modifiers for underwater strobes and continuous lights. They broaden beam angle and produce a more uniform spread for subjects at close to medium range.

Designs include flat panels, soft domes, and bowl-style hoods. Typical effects are a wider beam, reduced hot spots, and a small output loss of about 0.5–1.5 stops depending on material and thickness.

Beam angle, output and colour temperature

Adding a diffuser increases coverage for ultra-wide scenes and close-focus wide-angle. Expect less peak intensity but smoother edges and improved beam uniformity.

Colour options can shift or stabilise colour temperature for natural rendering. Neutral, warming, and cooling variants help balance mixed ambient light conditions underwater.

Attachment Methods and Compatibility

Most diffusers attach via clip-on frames, bayonet rings, or elastic bands. Correct sizing ensures a secure fit on the strobe head without vignetting in wide-angle use.

Check the required mount in the strobes category or video lights category and confirm coverage with your chosen optics in the ports category if you combine strobes with dome ports.

• Flat, dome, and bowl-style diffuser designs
• Wider beam with smoother edge falloff
• Approx. 0.5–1.5 stops output reduction
• Neutral or colour-shifting options available
• Clip, bayonet, or elastic attachment

Ambient filters and colour correction underwater

Ambient filters help balance artificial and natural light underwater. They are used to reduce harsh lighting transitions and create more natural colour reproduction in underwater photography and video.

Different filter types are available for blue water, green water and mixed lighting conditions. Some filters are designed for underwater strobes, while others are used with continuous video lights.

IR filters and specialised filter applications

IR filters are used with trigger strobes to block visible light while still transmitting the optical trigger signal to remote underwater strobes. This helps prevent unwanted trigger light from appearing in the image while maintaining reliable strobe synchronisation in remote lighting setups.

Some filters are designed for creative effects, while others help reduce reflections, balance colour temperature or improve contrast in specific water conditions.