So I've had my 5dmkII for a bit over a month now and I have moderate dust on my EF 24-105mm F/4 IS L lens, and some on my EF 50mm F/1.4 prime. I've been extremely careful and the glass on the lenses has never been touched. I think it's time to be cleaned though.
What do I need to do it -properly-, and how do I do it? I'll be pretty annoyed if I end up scratching my only L lens, so I'm not looking for the necessarily cheap answer
Side note: The sensor seems to be fine - I've been very careful when switching lenses and the automatic sensor cleaning on power-off seems to be doing its job. Also worth mentioning is that no dust (yet) is showing up on my images, but I havn't tried shooting closed down. Looking at the front element though it is fairly dirty -- I've taken it camping with me a couple times in very dusty environments.
Thanks in advance