« on: February 05, 2013, 02:35:55 AM »
Definitely good information. I didn't know this either.
the 77mm 17-40L can even be fitted with 82mm filters with a stop-up adapter since the Canon lens caps I own are designed to take 1 step larger filters (67->77 & 77->82).Really?
I can really say it for the 17-40L (I currently use it with a 82mm clear filter) and the 70-300L (even takes 82mm on top of a 67 mm filter). But when using a step-up you cannot remove the hood anymore and, screw on the filter from the front...