Objetivo Cosina 100-300mm F5.6-6.7 Macro. OM Description: Also marketed as a Cosina (and probably sold under other marques as well) Note that the PK-A/R mount has the ricoh pin which can catch in the AF slot on pentax dslr. Focal Length - 100mm - 300mm Lens Max Aperture - f/5.6-f/6.7 Min Aperture - f/32 Focus Type - Manual Focus Closest Focusing Distance - 58.8 in Picture Angle -8.4 - 24.6 degrees Groups / Elements - 10 Elements in 8 Groups Length -5.3 in Weight - 17.3 oz البيع لاعلى سومة