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Sea & Sea 15mm f/3.5 Underwater Lens

The Sea & Sea 15mm f/3.5 is a 15mm f/3.5 lens designed for Other mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Sea & Sea 15mm f/3.5 Underwater Lens

Sea & Sea 15mm f/3.5 Underwater Lens

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Lens Overview — Sea & Sea 15mm f/3.5

The Sea & Sea 15mm f/3.5 Underwater Lens is a purpose-built prime lens designed specifically for underwater imaging applications. With a fixed focal length of 15mm and a maximum aperture of f/3.5, this wide-angle prime is engineered to capture expansive scenes in aquatic environments where getting close to subjects is often essential. As a manual focus lens, it places full creative control in the hands of the photographer — a common and practical approach for underwater work where predictable, deliberate focus control is often preferred over autofocus systems that can struggle in low-contrast underwater conditions.

The lens falls into the special effect and wide-angle categories, reflecting its specialized nature rather than general-purpose use. It is listed under a non-standard camera system mount, meaning prospective buyers should confirm compatibility with their specific underwater camera housing or system before purchasing. Image stabilization is not present, which is typical for a lens of this specialized type.

Overall, the Sea & Sea 15mm f/3.5 is a straightforward, dedicated tool for photographers seeking a wide-angle prime built around the unique demands of underwater shooting.

Key Features — Sea & Sea 15mm f/3.5

15mm Prime Focal Length: A fixed 15mm wide-angle perspective allows photographers to capture expansive underwater scenes while staying close to subjects.

f/3.5 Maximum Aperture: Provides reasonable light-gathering capability in the typically low-light conditions of underwater environments.

Manual Focus Design: Full manual focus control suits underwater shooting where autofocus systems often struggle with low-contrast aquatic subjects.

Purpose-Built Underwater Lens: Engineered specifically for underwater imaging rather than adapted from a surface-use design, addressing the unique optical demands of shooting through water.

Wide-Angle Perspective: The 15mm field of view is well-suited to reef, wreck, and wide-angle marine life photography where proximity to subjects is limited.

Housing-Specific Compatibility: Designed to work with Sea & Sea underwater housings — buyers should confirm compatibility with their specific housing system before purchasing.

Lens Specifications — Sea & Sea 15mm f/3.5

Sea & Sea 15mm f/3.5 full specifications
SpecDetail
Use CasesUnderwater, Adventure
Lens TypeWide-Angle
FormatOther
Zoom/PrimePrime
Focal Length15mm
Maximum Aperturef/3.5
Camera SystemOther
Lens MountOther
AutofocusNo
Focus TypeManual
Image StabilizationNone

Description — Sea & Sea 15mm f/3.5

The Sea & Sea 15mm f/3.5 Underwater Lens is a prime lens with a 15mm focal length, sitting firmly in the wide-angle category and designed for specialized underwater photography use. With a maximum aperture of f/3.5, it provides a consistent exposure baseline in a fixed focal length format. This is a manual focus lens — there is no autofocus system — giving the photographer direct control over focus, which can be a practical advantage in the deliberate, methodical environment of underwater shooting.

The lens is categorized under the 'Other' camera system and mount type, so buyers must verify compatibility with their specific camera or housing setup before committing to a purchase. No image stabilization is present, and no filter thread size is listed in the specifications. Weight data is also not available. For photographers already invested in a compatible Sea & Sea underwater system, this 15mm f/3.5 prime offers a wide, dedicated field of view purpose-built for aquatic environments.

Pros — Sea & Sea 15mm f/3.5

  • ✓15mm focal length provides a wide-angle perspective well-suited to underwater imaging
  • ✓f/3.5 maximum aperture offers reasonable light-gathering in a specialized underwater lens
  • ✓Prime lens design at 15mm delivers a fixed, consistent field of view

Cons — Sea & Sea 15mm f/3.5

  • ✗No autofocus capability — manual focus only, which may be limiting for fast-moving subjects
  • ✗Listed under 'Other' camera system and mount, so compatibility with specific housings or cameras must be verified before purchase
  • ✗No image stabilization available

Videos — Sea & Sea 15mm f/3.5

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Resources & Downloads — Sea & Sea 15mm f/3.5

Manuals & Guides

Frequently Asked Questions — Sea & Sea 15mm f/3.5

Does this lens support autofocus?+
No. The Sea & Sea 15mm f/3.5 is a manual focus only lens. There is no autofocus mechanism included, so the photographer must adjust focus manually during use.
What camera systems is this lens compatible with?+
The lens is listed under the 'Other' camera system and mount category in the specifications. Buyers should contact the seller or Sea & Sea directly to confirm compatibility with their specific camera body or underwater housing system before purchasing.
What is the maximum aperture of this lens?+
The maximum aperture is f/3.5, as listed in the specifications. No minimum aperture value is provided in the available data.
Does this lens have image stabilization?+
No. The specifications confirm that image stabilization is listed as 'None' for this lens.
Can I attach filters to this lens?+
The filter thread size is not specified in the available product data, so it is unclear whether standard threaded filters can be attached. It is recommended to check with the seller for clarification.