Pentax Seeks to Patent 100-300 f/2.8-4

Pentax is looking to upgrade its lens cred with a patent application for a full frame 100-300 f/2.8-4. According to Pentax Rumors, it looks to be a fairly large lens.

Pentax recently filed applications for some additional telephoto zooms, including 70-300 and 100-400 slow aperture models, as well as a 70-400 and 150-600.