Venus Optics Laowa 100mm f/2.8 2X Manual Ultra Macro Aperture Camera Lens for Canon EF Pentax PK Nikon Lens

Laowa. Aperture Range: f/2.8 to f/22. Two Low Dispersion Elements. Maximum Magnification: 2:1. Minimum Focusing Distance: 9.7". Manual Focus Design. Followed by 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. It features an apochromatic APO characteristic that chromatic aberration at both in-focus out-of-focus is both invisible. 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 lenses in the market but its wider magnification range allows macro photographers to capture subjects at any sizes. This 100mm f/2.8 lens can also focus to infinity and serve as a portrait lens with exceptional optics quality. Only Canon EF version is equipped with a CPU chip and motor for aperture control via the camera. All other mounts are manual and aperture is controlled by the aperture ring on the lens. Characterized by its close-f