Hello all! I'm new to the world of photography/DSLRs! I bought a Canon Rebel XS with a EF-S 18-55mm f/3.5-5.6 IS lens about 7 months ago. I recently moved to Italy with my husband, and have been taking pictures everywhere I go! Anyway, this past weekend while I was out and about taking pictures I noticed a dark spot on most of my pictures. Grrrr. It seems to show up on blue/sky the most. Anyone know what this little spot could be, and how I can get it off?