2:1 Magnification at same physical size: Laowa 100mm f/2.8 2:1 Ultra-Macro is the second 2:1 Macro lens that we have (The first one is the 60mm f/2.8). 100mm is one of the most common focal length for macro photography usage. All of the 100mm macro lenses in the market can only reproduce 1:1 magnification (life-size) image only. The extended 2x magnification means more details can be seen through the lens. Photographers can now take advantage of the wider magnification range to capture bugs at different sizes.
Apochromat APO design (invisible CA): The Laowa 100mm f/2.8 has a Apochromat (APO) design where the chromatic aberration (CA) at BOTH in-focus & out-of-focus area (Longitudinal CA) is controlled to the minimal. CA has long been one of the most annoying aberrations for macro photography and now you can forget about this and focus more on taking a great shot.
Similar size as 1:1 macro lens: Despite the extended magnification range, the size of our Laowa 100mm is actually comparable to other macro lenses in the market.
Automatic Aperture (Canon EF) , Aperture Coupling (Nikon): The Canon version of the Laowa 100mm Macro lens is equipped with an aperture control motor and CPU chip. The aperture can be controlled via the camera body (no aperture control ring on the lens body) and the aperture will close only during shutter release. Photographers no longer need to compose their shots in a dark viewfinder. A focus assistance indicator will also be shown in the camera. EXIF data can also be saved.
Outstanding Portrait lens with crystal sharpness: Laowa 100mm f/2.8 2:1 Ultra Macro APO is not only a exceptionally macro lens. It can also focus to infinity and is a very decent telephoto portrait lens.
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.
Nikon F mount version now features Ai coupling – a mechanical aperture coupling compatible with advanced Nikon cameras that tells the camera the maximum aperture of the lens.
Read: More Information (on Laowa’s Canadian website)