Is there any way to use background images while modelling in a perspective view? Photos do have some perspective associated with them, and modelling orthographically seems to give strange results sometimes.
When I set a background image for the ‘camera’ view the image appears to be distorted.
For many reference images the perspective is known. References from 3d.sk, for example, such as JW used in his Modelling the Female Head/Body have camera data with them. Models I shoot myself have known camera data, and one can estimate a lot of images pretty accurately even if camera data is not known.
Just as an aside, I found that when using the empties displayed as images in 3d view for reference, I did well to down size the images from what my camera had caught them to something more manageable. My camera captures 5k pixel width, and that is beyond comfortable for handling in the 3d window. I sized them down as copies to 20% and then they behave nicely. There is no difference in the scale of the image when they display, since it is based on the width to height ratio.