Hello fellow 6D users. I'm new to the group, and new to the 6D (just upgraded). My camera came with the 24-105 mm (non L) lens. I'm thinking of upgrading to the same lens (I really like it), only going with the "L" series (EF 24-105mm f/4 L IS USM). My question has probably been asked before, but I can't find it on any thread: Is upgrading to the "L" lens a good move? If you place an identical pic taken with the "L" lens next to a a non "L" lens pic, can the upgrade in quality be noticed easily? Thanks for any input anyone is willing to share.