Compared with the Laowa EF/RF-mount macro lens, this Sigma EF-mount lens has the more usual 1.0x maximum magnification factor, but adds a full set of bells and whistles. Ring-type ultrasonic autofocus is fast and whisper-quiet, complete with a threeposition range limiter for full, short or long focusing. Focusing itself is fully internal and there’s a 4-stop optical image stabilizer with switchable static and panning modes. The optical design incorporates two SLD (Special Low Dispersion) elements to improve sharpness and contrast, while reducing colour fringing. It’s great for DSLRs as well as for R system cameras via an EF-EOS R mount adaptor. ✪✪✪✪☆