LAOWA 100mm f2.8 2:1 APO Ultra-Macro Lens Following the success of the Laowa 60mm f/2.8 2:1 Macro, the 100mm f/2.8 2:1 Macro is the 2nd member of Laowa 2:1 macro line-up. This new 100mm lens can cover full frame sensor size and focus from 2:1 magnification to infinity. The lens has a similar physical size to other 100mm Macro lens in the market but double the magnification This 100mm portrait lens also features an apochromatic (APO) characteristic that chromatic aberration is invisible. The 12 elements in 10 groups optics design delivers a crystal sharpness image in both macro and infinity distances. Canon EF / Nikon AI / Sony FE mounts are available. The aperture of Canon version can be controlled electronically in the lens (Compose at wide open) so photographers no longer need to compose their shots through a dark viewfinder. A focus assistance indicator will also be shown in the camera. EXIF data will also be saved into the camera.