Hello everyone. I need some help. I just bought a Tamron 14mm 2.8 SP. I have taken some pictures of inside my house to try out the lens. I am needing a wide lens to try getting into real estate photography. So everything I read before I bought this lens says it is not a fisheye and does not distort images. I have taken the pictures and see a lot of distortion. Is there something I am doing wrong or is this lens not compatible with the D750. Well the pictures I saved are too big to use. So the edges are pulled out. Like things that are supposed to be square are not like floor tile and a square picture on the wall.