YOU GUYS HAVE HELPED ME SO MUCH IN MY LAST POST I WANT TO RUN THIS PAST YOU IF I COULD. You have helped me choose the tamron 17-50 f2.8 and a 85 mm F1.8 for the weddings coming up, as ive already got a 50mm f1.8 and uve said to keep my kit lens canon 18-55, im going to sell my new canon 18-200 IS so i can buy one more lense. I wanted the canon 70-200 f2.8 IS but this is way out of my range, so im thinking of either the sigma 70-200 F2.8 or the Tamron version which i belive to be quite noisey? But has anyone used either of these please and what do you think, as if i get one i should have a tidy kit then for this wedding. I have heard that the tamron 17-50 lens which ive been suggested to get struggles a little in low light which is defeating the object a little for the evening shots but????? Im looking forward to your help and thank you once again. Moderator: Title changed. Please post using titles that identify the subject, not all caps titles that don't have anything to do with the question.