Micro Wide Angle Dome Lens


The Micro Wide Angle Dome Lens for Micro-series and ReefMaster RM-4K underwater cameras increases the camera’s field-of view by almost 50% and allowing photographers to get three times closer to the subject.

1 Year Limited Warranty: 1 Year

Extended Warranty Information

How to buy: SeaLife has a US and international dealer network, we encourage you to contact your nearest stocking SeaLife dealer. Your nearby SeaLife retailer can help you make the right selection and support your SeaLife equipment with accessories and servicing if needed. Please see our dealer locator here. We have dealers and distributors worldwide; if you’re not able to find a SeaLife merchant near you, you may purchase from us directly.

What's Included

The Micro Wide Angle Dome Lens design uses high-grade optics arranged in a 4- element/4- group array that delivers crisp edge-to-edge sharpness. The internal elements are fully multi-coated optical glass. The dome lens is optical polycarbonate with hard, anti-scratch coating. The lens has a 13.3mm film-equivalent effective focal length when used with the SeaLife Micro 3.0 and is waterproof to 200ft/60m.

The lens fits all SeaLife Micro-series cameras (Micro HD, HD+, Micro 2.0, Micro 3.0) and also works with the SeaLife ReefMaster RM-4K increasing the tiny camera’s shooting angle to a massive 196°. The Micro Wide Angle Dome Lens increases the Micro 3.0 shooting angle by 43% to 143° (in air) and allows the user to get almost 3x closer to the subject.

The Micro Wide Angle Dome Lens is a “wet lens” and easily attaches and removes underwater. A locking ring prevents the lens from accidently detaching when bumped or in rougher water conditions.  The lens weighs 11.7 ounces (331 grams) and is negatively buoyant. A lanyard is included to prevent loss underwater and the lens can dock on the Lens Caddy (SL091) when not in use.

The rotatable light shade prevents unwanted glare from external lighting or sunlight, as well as protect the dome lens from bumps and abrasion. For more information, review the Instruction Manual.


Get 3x closer and 43% wider field-of-view

Optical design corrects barrel distortion and improves edge-to-edge sharpness

0.7x wide-angle conversion

Fully multi-coated optics for maximum light transmission

Fits all SeaLife Micro-series and ReefMaster RM-4K cameras

Easily attach/remove lens while underwater

Attaches to SeaLife “Lens Caddy” Lens Holder (Item SL091)

Precision 4-element/4-group high-grade optics (internal optical glass)

Polycarbonate dome lens with scratch resistant hard coating

Includes neoprene dome lens cover, rear lens cap and protective pouch

Waterproof to 200ft / 60m


Optical Construction 4 elements / 4 groups
Angle of View Micro 3.0: Increases field-of-view from 100° to 143°
RM-4K: Increases field-of-view from 140° to 196°
Micro HD & Micro 2.0 Models: Increases field-of-view 43° to the selected shooting angle
Optical Coatings Air-to-glass surfaces fully multi-coated with anti-reflective coating
Magnification Ratio 0.7x underwater
Attachment Method Push-on lens ring locks on to SeaLife Micro-series and RM-4K cameras on land or while underwater
Focus Ranges Get 3x closer: 5”/12.7cm to infinity with Micro 3.0; 4”/10.16cm to infinity with RM-4K (Focuses underwater only)
Lens Weight (Lens Only) 331 grams/11.7 ounces on Land; 170 grams / 6.0 ounces underwater
Lens Dimensions 3.9” diameter x 1.6” length (99 mm diameter x 40mm length)
Construction Black Hard Anodized (type III) Aluminum
Depth Depth tested to 200’ (60 m)
Buoyancy Negative
Warranty 1 year limited warranty
Packaging Dimensions 4.8” x 4.8” x 2.4” (123mm x 123mm x 60mm)
Packaging Weight 1 lb. (453 grams)
Country of Origin Designed/Engineered in USA, Made in China

What's Included

Micro Wide Angle Dome Lens
Lens adapter for SeaLife Micro-series and ReefMaster RM-4K
Neoprene dome lens cover
Rear lens cap
Protective storage pouch
Lens retaining lanyard
Microfiber cleaning cloth

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