I'm shooting with an XTi. For some reason my images are coming out blurry... Last night i was playing with my speedlight and I took some pictures of myself and they came out blurry... ISO was on 400 and it was on a Tripod... Now my Tripod is a little unstable(top shakes), so im wondering if that could be the problem? Any help is apprecaited! I can post the pics if need once I get off work. Thanks!