Sealife SportDiver 67mm +6 Macro Lens

I was worried about getting decent shots of tiny nudibranchs, but this lens let me capture every detail of their cerata. The glass feels solid and the +6 magnification made a huge difference on my last dive.

Screwed this onto my housing's 67mm port and suddenly the tiny shrimp I'd been squinting at filled the frame. Focus is crisp edge to edge, though you really have to get close to your subject. Worth it for macro fans.

The +6 diopter brings out incredible detail on tiny subjects, but you'll need to be almost touching them for focus. Threads onto my 67mm port cleanly with the adapter, though that's a separate purchase.