Issue since I change lensHave a Canon Rebel T3I and I Bower fish eye (180) lens and it works fine, besides the fact that it does no give me a true 180 hence I have a huge hole top and bottom so I have to take an extra top shot. I Got a Sigma 8mm 1:4 EX (180). It give me a true 180 and now do not have to do the top shot, I just tilt the camera about 10 degrees and I get the top and still have a smaller hole at the bottom where I just place a logo.
The issue is this, with my sigma lens, I always get a little point in the ceiling looking like a paper crease (See image)
Anyone having this issue too. It happens in both PW 7.x and 8.x