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.




