Canon ef 85mm f18 usm
Telephoto lens series canon ef lens mount canon ef lens speed 18 focal length 85 mm suitable for sensor types aps c full frame construction prime lens area of use portrait photography night photography astrophotography action photography focus internal focus auto focus manual focus af motor ultrasonic motor usm max magnification 17 7 closest focusing distance 85 cm lens construction groupselements 79 number of aperture blades 8 minimum aper