I just recently made the move to using a Canon 5d + Sigma 3.5 EX DG. Previously I was using a Nikon 5000 + Fisheye. I usually take three images around at different exposures and then use Photomatix to blend them. I am noticing a strange effect in my images. If you look at these images you will see the siding and roof of the home cause some strange effects. Any idea what causes this, and is there a fix either while shooting or in post production?
Thanks for an help with this.