one of my friends, asked me to come and take some pictures of clean room facility he had. i was hand holding and taken the pictures. obviously in most of the images the horizontal and vertical lines are out, as you can see from the following pictures.
i tried to straighten them in photoshop and not happy with the results. apart from keeping the camera horizontal and keeping it on tripod is there anything i should be doing to get these pictures come out properly.
thanks in advance.


