Benefits Low-profile design prevents the filter from darkening (or \'vignetting\') the corners of the frame Fits lenses with a 52mm filter thread (look on the end of your lenses to find their filter thread sizes) Makes colours appear more saturated Reduces reflections from non-metallic materials Compatibility EF 28mm f/2.8 EF 35mm f/2 EF 40mm f/2.8 STM EF 50mm f/1.8 II EF 135mm f/2.8 softfocus EF 50mm f/2.5 Compact Macro EF-S 24mm f/2.8 STM EF-M 1855mm f/3.55.6 IS STM EF-M 55200mm f/4.56.3 IS STM RF 35mm f/1.8 IS Macro STM