>>3909933>If only M-mount lenses weren't so diverse in their filter sizes though. 46mm for the Ultron 28/2, 43mm for Nokton Classic 35/1.4 (and 7artisans 35/2), 40.5mm for M-Hex 50/2 (also Industars, Jupiters).Kinda your fault for not being more strategic in lens choice. It's not difficult to stick with only 39mm and/or 43mm filter size for mount.