The LH49 is a round lens hood developed specifically for the M.Zuiko Digital ED 60mm F2.8 Macro. This special lens hood is incorporating a new innovative mechanism to slide down, when it is not needed. With this lens hood it is not necessary to detach it anymore. Just keep it on the lens and easily slide it down for transportation. The LH49 keeps extraneous light from entering the lens on backlit shots and is perfectly fitting to the design of the M.Zuiko Digital ED 60mm F2.8 Macro.