Lens Not Attached : MANUAL LENS need you to enable "M mode " or "Release without lens" in the setting of camera Fixed focal length 25mm,Wide angle lens. Maximum aperture of 1.8-16 delivers smooth bokeh,fit Close-up/portrait photo photography Lens construction is 7 elements in 5 groups, multi-layer coatings Minimum focusing distance of 0.25m,Full-frame Visual angle:diagonal 61° horizontal 50° vertical 35° For Micro 4/3 system cameras.Metal body, lightweight and portable