I am having some issues with quality of pictures when I try to use the self timer on the 50D. If it is somthing close the photo comes out fine, but if say, for example, I try to photograph some people and use the self timer to be in the photo, it turns out completely blurry. It looks like it was taken on manual not completely focused but it was set to automatic. It'd odd because it wasn't even focused on something in the distance or foreground. Any idea why it happens?

