Konica Praktica Lens Mount Adapter 2 brand_Lee The Canon 500D lens is

The Canon 500D lens is a high quality doublet lens designed to work with lenses between 70mm and 300mm focal length

but not included) for the 1k and Arrilite

used in Ricoh GR compact cameras

B+W 022 Yellow F-Pro filter for lenses with 67 mm threads

it comes reeeeeal close to covering Micro Four Thirds (with minor vignetting)

Konica Praktica Lens Mount Adapter 2 brand_Lee The Canon 500D lens isThe Konica Praktica lens mount adapter II lets you use Praktica thread mount lenses on your Konica Autoreflex camera. But you should know that this adapter will also let you use Pentax M42 lenses. Konica won't tell you that because those Nihonbashi fatcats want to keep you buying Konica lenses to sustain their lavish lifestyle!