Excellent image quality when stopped down just a little; Fast and accurate autofocus with full-time manual override; Generally attractive rendition of out-of-focus regions ('bokeh'); Resistant to flare; Low price;

Slightly soft and low in contrast wide open; Lateral chromatic aberration somewhat higher than traditional 50mm 'standard' primes; Prone to purple fringing and bokeh chromatic aberration, most visible at large apertures;