**Caution the different version of Canon 50mm lens**
ES-71II: EF 50mm f/1.4 USM (Filter diameter: 58mm)
ES-78: EF 50mm f/1.2L USM (Filter diameter: 72mm)
ES-65II: EF 50mm f/1.8 (Filter diameter: 52mm)
ES-65B:RF 50mm f/1.8 STM (Filter diameter: 43mm)
ES-62: EF 50mm f/1.8 II (Filter diameter: 52mm) (+adapter)
ES-68: EF 50mm f/1.8 STM (Filter diameter: 49mm)
EF 50-200mm f/2.8L design use version I: ES-79 , is same size as version II: ES-79II**