Olympus FCON-T01 Fisheye Conversion Lens with CLA-T01 Adapter (for TG-1, TG-2, TG-3, TG-4, TG-5) Review

The Olympus FCON-T01 is a fisheye conversion lens designed exclusively for the Olympus Tough TG series compact cameras (TG-1 through TG-5). It ships with the CLA-T01 adapter ring, which threads onto the camera's front port, allowing underwater and extreme-environment shooters to add dramatic wide-angle perspective without investing in a full interchangeable-lens system. At 101 USD MSRP, it's a niche accessory tailored to users who already own one of these rugged compacts and want creative optical flexibility in the field or underwater.

Because the TG series has largely been succeeded by newer models and the FCON-T01 is often found on the used market, it's best viewed as a specialized add-on for existing TG owners rather than a broadly relevant lens purchase. It delivers the characteristic fisheye look and works well for underwater macro-to-wide transitions, but its utility is entirely dependent on owning a compatible TG camera.