The plastic mount was later added to the Canon budget fifty dollars in order to appease marketers. The original version of the camera had a metal mount. Optically and mechanically, they remained the same; nonetheless, they squeaked when focusing and frequently missed the mark because of backlashes. But, it was the plastic lens that gained popularity since, for just $100, it made it possible to take crisp pictures with lovely blur (when it did not miss). On the bugs, Canon engineers have been working. Like the 50mm STM, the focusing mechanism has undergone a thorough makeover. The replacement lens no longer frequently misses, does not screech when focusing, and the mount is once more made of metal.
Black Canon EF 24-105mm f/4L IS II USM Lens - Model 1380C002
78 Review
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review
Nikon 35mm f/1.8G Auto Focus Lens for Nikon DSLR Cameras - Black (Model 2183)
125 Review