The HOYA HD Protector is available for £35 (58mm), The HOYA PRO1 Digital version is available for £27 (58mm), and the Kenko Smart Filter MC Protector (Slim) is available for £16 (58mm).

The Hoya Solas filters will be sold in sizes of from 49 to 82 mm, with the 1.8 and 3.0 density filters also fitting 46mm lenses. Sold exclusively in the U.S., the Solas filters are available now ...