Quote Originally Posted by Diapositivo View Post
I totally agree.

There are circumstances, taking pictures of architectural features, where straight lines are important and distortion, if present, can be very evident and quite disturbing.

https://www.zoonar.com/photo/detail-...me_830873.html

http://www.alamy.com/thumbs/6/%7B6AC...%7D/BDE8MM.jpg

http://www.alamy.com/thumbs/6/%7B784...%7D/BWNKAA.jpg
These distortions are a red herring, because they not because of inherent lens aberrations but because the camera has been pointed upwards to cause perspective distortion because it wasn't capable of lens movements in relation to the film plane.