Canon EF 50 mm f/1.8 II
Among Canon devices you can find the more expensive EF 50 mm ff/1.4 USM and the cheaper Canon EF 50 mm f/1.8 II along with the macro Canon EF 2.5/50 Compact Macro Standard and the horribly expensive EF 50 mm f/1.2L USM L-series lens. The cheap 1.8/50 model is a real treat for the beginners.
excellent image quality in the frame centre (apart from the maximum relative aperture); very good control of chromatic aberration; moderate distortion; imperceptible coma in the corners of the APS-C; slight vignetting on the APS-C; moderate astigmatism; good colour rendition and sensible total...
not especially solid; plastic barrel and mount; horrible performance of manual focus ring which is devoid of any scale; loud and unreliable autofocus; huge vignetting on full frame; high coma in full frame corners