SMC Pentax-M 100mm f2.8 iso_100 You will need a computer

You will need a computer with a Firewire connector to make this scanner work

It accepts eight AA batteries (not included) and connects via a coiled cable to the external power socket of the SB900/910 for faster recharge times and longer life than the four built-in batteries

with retaining ring

in addition to a rotating lens mount

it's not a Swissgear

SMC Pentax-M 100mm f2.8 iso_100 You will need a computerThe SMC Pentax M 100mm f2. 8 lens is a nice, compact short telephoto lens, ideal for portraits or slightly too far away dogs. In good condition overall, with minor cosmetic wear and light internal dust which will not affect imaging.