Professional Pentax 645 super-telephoto with ED glass and AF, unique medium format reach at 237mm equivalent.
The Pentax SMC Pentax-FA 645 300mm f/4 ED [IF] is a super-telephoto prime for the Pentax 645 medium format system. FA 645 designation covers both film and digital 645 bodies. ED = extra-low dispersion glass. IF = Internal Focus. Pentax 645 mount.
f/4 maximum aperture. 300mm focal length (equivalent approximately 240mm full-frame for 645 format). ED (extra-low dispersion) glass. Internal Focus (IF). AF. Pentax 645 mount.
The FA 645 300mm f/4 ED is a professional super-telephoto for the Pentax 645 system — equivalent to approximately 240mm on full frame, for sports, wildlife, and distant subjects in medium format quality.
On the used market the Pentax FA 645 300mm f/4 ED is a premium medium format super-telephoto. Condition checks: AF operation, ED front element, focus ring. Pentax 645 mount.