But it's listed that there will be 10 different lens caps sizes for the holder:
From the site (as of June 7, 2011):
52mm, 55mm, 72mm & 77mm for Nikon, Pentax, Fujifilm, Sony, Pro-series and vintage lenses
46mm, 58mm & 67mm for M4/3, Cannon and Nikon lenses
40.5mm, 49mm & 62mm for M4/3, Olympus and vintage lenses
What is the difference between a Canon and Nikon lens cap, in terms of it's fitting?
Specifically, I have a 72mm lens for my Canon, so does the 72mm lens cap holder listed for the Nikon here not fit my Canon lens cap?