Canon Lense Hood

posted in Canon lens 50mm
The poorly-constructed 50mm f/1.8 II left many opportunities for upgrades and the 50mm f/1.8 STM addressed a substantial number of them. Here is a list of some differences between these lenses:
7 rounded aperture blades vs. 5 non-rounded (no more pentagonal bokeh)
Metal lens mount vs. plastic
Improved overall build quality (my original 50mm f/1.8 II broke in half for an unknown reason)
Super Spectra Coating
A much improved manual focus ring
STM vs. Mic...