I just got a used Canon 17-85 IS lens for my 20d from the B&H used dept. So excited! However, i have noticed small, but in my humble opinion, significant dust particles under
the front lens. They had it graded as a 9+ so naturally i'm a little cranky about the whole thing (though i got a great deal on it).
First question: Is this going to seriously impact my images?
#2: What would be the best way to test if it is messing up the photos?
#3: Is there a way to get it cleaned?
I really like this lens, but if my photos are going to have spots, it's a waste of time.