I did this one again insteadof the chapel: As you can see the pillar leans to the right, the window looks like it is bowed out at the top left, it also looks like it is at an angle, but the walls are straight.
Another HDR where I have tried to get it in correct perspective best I can, shot in vertical aspect 17mm, I had to reconstruct the floor and star. I added a yellow filter 44% for effect since if you are in the South Transept of Lichfield Cathedral you notice the yellow light.
Notice the knots; legend has it these were used to hang three peasants at a time with, they are called the Stafford knot.