Quote Originally Posted by rlriii13 View Post
I was definitely in autofocus. If I get to reshoot, I'll do everything I can manually and keep them consistent through the shots. I've merged shots with autofocus before without issues though, so I didn't worry about it when I was shooting the first time. Could that be contributing to my problems?
Yes, I really think this could be an important factor. I will not say that it's impossible with AF, but definitely at a higher risk of failure. Anyway everything that you can rule out would be nice. Differences in distortion and vignetting seem like the most likely problem in your shot.