Hey there! So, for all intents and purposes my 35mm kit (all Nikon/Nikkor) consists entirely of 52mm filter thread. Now, I also shoot LF with a variety of old lenses that have thread bigger than 52 (but probably not anywhere near 77mm). I want to get the biggest filters I would plausibly use and use a step-up ring on my Nikons, but because filter size = money, I want to know what size I should get... Plus, a 52mm lens with a 77mm filter/hood would be somewhat clumsy, I think. 58? 67? 77? Go ahead and buy 52s?? What sizes do y'all use?