I'm with Peter, Lens coatings are tougher than we think, and I feel we treat them like fairy floss, if you pay big bucks for L Glass, than one can expect it can take some punishment.
All this crap that Canon and others put out about not touching anything is just crap.
I have taken 3 filters out of a 5D and replaced then, handled them, wiped then clean, and replaced them, and this is what i image with now.
Don't be afraid.
Leon
