Large photos in blogger

I figured it out.  If I log in with my Google account, it uploads pictures to Picassa, and then inserts smaller versions of the pictures into the blog.  If I log in with my yahoo email address, it uploads directly to the blog, and uses the actual size, which is what I want.  Just duplicated two sets of pictures, and will delete the blog post that is to small.  Disadvantage is that the pictures aren't available to me in Picasa.