Not just 'no' but heck no! Get a cheap-o ring and get busy with that FM2. I have a couple Heliopan rings because they were the only ones available in hard-to-find sizes while all other rings of mine are from who-knows-where. Haven't been able to discern a difference.
Originally Posted by nwilkins
Last edited by Aja B; 08-30-2012 at 06:38 PM. Click to view previous post history.