EM-5 + 9-18 for Real Estate photos...Love it!

I think you are probably correct. I don't do commercial work, but have volunteered to photograph interiors for a ranch with guest cabins. They want the guests to be able to see what the cabins look like inside. Nonetheless, I often opt for shooting straight on in some rooms, where the side distortion becomes rather pronounced. But shooting at an angle certainly gives a more interesting view of many rooms.

Oh, I've noticed that! Very curious indeed!

It also reminded me that years ago when many architectural photographers used a view camera, the side movements helped a lot with the perspective problems we've been discussing.

Your lighting solution is very effective. I'm going to look into that.

thanks,

Richard