Sea & Sea 40L DX Extension Ring

Availability:

In stock


Key Features of SS-30145

  • Waterproof to 100 meters
  • Port extension for lens compatibility

SKU: SS-30145
Condition: Brand New
Other Options: Opened, unused, or refurbished units may be available contact support.

$344.94

In stock

Sea & Sea 40L DX Extension Ring | SS-30145

A macro photographer’s toolkit isn’t complete without the right extension ring ? and this Sea & Sea option gets you closer than ever. Built for shooters who demand precision in underwater or close-up settings, the 40L DX model bridges the gap between your lens and detailed subjects.

  • Focused reach: The 40L length pushes your minimum focusing distance even closer, letting you fill the frame with small marine life or intricate textures without sacrificing clarity.
  • Seamless integration with DX systems: Designed to lock onto compatible DX-series ports and housings, it’s a direct fit that doesn’t fight your existing setup.
  • Solid, leak-proof construction: Every seal and thread is engineered to withstand the pressure of deeper dives ? because water intrusion isn’t an option when you’re framing that once-in-a-lifetime shot.
  • Lightweight in your rig: It adds minimal bulk and weight to your housing, so you spend less time wrestling your gear and more time composing.
  • Glass-free optics: Since there’s no glass element inside, you get zero added distortion or flare ? just pure, unaffected light travel straight to your sensor.

If you’re already invested in the Sea & Sea ecosystem, this ring is a natural next step for expanding your macro capabilities. It’s a simple addition with big impact on your frame.

SKU: SS-30145 Category:
Weight 0.61875 lbs
Dimensions 5.2 × 2.2 in

Sea & Sea 40L DX Extension Ring Specs

Environmental Environmental Protection Advertised as Water Resistant to 328′ / 100.0 m
*Test Methodology Not Supplied
Environmental Resistance Water-Resistant to 328′ / 100.0 m (Unrated)
Physical Color Black
Material of Construction Aluminum
Dimensions 5.2 x 2.2″ / 132.1 x 55.9 mm
Weight 9.9 oz / 281 g
Sleek Capture

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3.8 4 stars 2 Reviews

MD
Michael Dewey 2025-05-13
5 stars

Good price with free shipping

Found another great website for my photography needs. They had the item I was looking for and price was ok with free shipping. Definitely use them for future photography needs.

CT
Chaz Tonn 2025-04-03
5 stars

Good Experience

I just wanted to say thank you for the amazing service! Easy to navigate website, items well described. I chatted with customer service, very knowledgeable, friendly, and helpful.