What We Like
+Excellent corner-to-corner sharpness even wide open at f/2.2
+Compact and lightweight at 320-325g for a 135mm equivalent telephoto
+Very affordable at $369 USD, less than half comparable alternatives
+Well-controlled distortion, chromatic aberration, and coma with near-perfect correction
+Smooth, pleasant bokeh with attractive background separation
+Robust build quality with metal mount and dust/moisture resistance
Worth Knowing
−Notable focus breathing that affects video work, though acceptable for still photography
−Basic weather sealing without full weather-sealed design
−Fujifilm X-mount version has reduced feature set (no function button or click-less aperture)
−Some halation and loss of contrast at f/2.2, improving at f/5.6 and smaller