So I saw some discussion about the patent filing for the Olympus 28mm f/2 lens. Some thought it was just for the Sony FE system, but Sony already has a very good 28mm f/2 lens. Well, today another group of full-frame lenses designed and patented by Olympus have appeared (link). A 20mm, 24mm, and 35mm f/1.4 have all been designed and patented by Olympus. The corresponding text says that the lenses have a large amount of distortion and chromatic aberration, but that's not very different from current m43 lenses, where this is corrected in-camera. This would allow Olympus to make small bodies (the A7 series show this) along with small full-frame lenses, as they won't be optically perfect. There is a limit regarding what's achievable with a sensor the size of m43, any Sony is making some fantastic full-frame sensors. Take the sensors, match them with Olympus' 5-axis IBIS, and keep the body and lenses small, and it sounds like a great system. So, what do others think Olympus is up to? Are they building their own full-frame system, designed lenses for other manufacturers, or just patent trolling?