Comments about Olympus Olympus WCON-08D, 0.8x Wide Auxiliary Conversion Lens for C-8080 and SP-500UZ Wide Zoom Digital Camera.:

This is one outstanding Olympus lens that yields 28mm * 0.8 = 22.4 mm, with corner to corner sharpness and very little flare (except when shooting into the sun). Contrast is very good, but the lens will exhibit distortion towards the edges): keep it away from linear patterns.
Easy to install on the CLA-8 adapter (sold separately) - however make sure you secure it well by twisting the adapter ring all the way (or else you'll drop a very heavy piece of glass). The CLA-8 adapter can actually stay mounted on the camera at all times (protecting the extended barrel of the built-in lens). The front element of this lens bulges outward, so keep the lens cap on when not shooting.

The Olympus c8080 + WCON-08D is now a perfect landscape camera.