I've been using my Picam outdoors, in a sheltered location, without any type of cover over the lens, for the past year or so. Lately, the image has seemed blurry and yellowish. Is it possible the lens has been degraded by UVs? Tried cleaning it with Isopropyl alcohol on a Q-tip, in case it was just dirty, but no difference.
Snapshot attached. Taken during cloudy skys, so it less yellowish, but still blurry.