Does it really matter what lens was used? Regardless of the angle of view in the photograph, the "natural" viewing distance is going to be about equal to the diagonal of the presented image. This is the distance people general gravitate to when they want to take in the whole image comfortably.
If thats true, then to get a normal perspective, we should all be using lenses where focal length matches that diagonal measurement.
There are many other things that constrain viewing distances though like furniture, hallways, ...
Mark Barendt, Ignacio, CO
"We do not see things the way they are. We see things the way we are." Ana´s Nin