The Olympus CLA-T01 Conversion Lens Adapter is a red adapter designed for Olympus cameras in the Om System Tg-Series. Its prime lens design has a fixed focal length of 40.5mm and a real angle of view of 60.0 degrees. This lightweight adapter, weighing only 0.04 pounds, includes one piece and comes in standard packaging. Compatible with Olympus Om lens mounts, this adapter allows users to attach standard lenses to their camera system.
Great concept but failed in craftsmanship. Would be much better if made of aluminum. The plastic loses its ability to hold secure. Loosens up over time to the point it will unscrew without effort. Need to be readdressed and redesigned to better hold the lens to the camera.
Even if you never use fancy lenses, you will need this if you want a cap to protect your lens, and it does come with a lens cap. The only downside is that each time you take the cap off (by squeezing the sides), you risk losing it, as there's no tether attaching it to the adapter. It does seem rather expensive for its size and complexity, but oh, well. It really is necessary.