Good evening! Okay, so I'm one of these people that religiously screws a UV filter to the front of every lens; a good quality Hoya item that will - in theory - minimise loss of quality, but allow the odd bump and scratch because I am still a little wet behind the ears. Right or wrong, that's what I do. My question for today comes from the fact that (**very excited** *EVERSO EVERSO EXCITED!*) I am about to buy a Canon 100mm Macro lens! Yay! So - does it matter if I just slap a cheap UV, or even a cheap skylight on this lens due to the nature of the photography, and the fact that UV light may not play such a naughty factor in interfering with nice pictures? Advice, as always, very gratefully received.