Lens Not Attached : MANUAL LENS need you to enable "M mode " or "Release without lens" in the setting of camera
Wide aperture of T2.1, minimum focusing distance of 85cm, Lens construction is 14 elements in 8 groups, multi layer coating, capable of delivering sharp and clear video
With full coverage on Full Frame and APS-C sensors; Angle of view 29.5° on full frame cameras, 19.2° on APS-C cameras;
Solid metallic constraction and easy to use on Canon cameras with EF mount.