Originally Posted by
mike_ie
not so much you not lining things up properly, but rather where things have moved between photos. HDR being a combination of shots that are sometimes a few seconds apart, if you're taking pictures that contain leaves in the wind, clouds, waves on the sea, etc, these things move between the shots that make up the HDR image, and the software doesn't know how to combine them.
Good HDR software will first analyse the source images, and tell you if there are any such differences between the images. If there are, it then allows you to select a base image, and ignores the data from the other images where it doesn't match up with the base image.