35, 50

Wide and telephoto touch somewhere between 35 and 50, which means every lens over 50 is called a telephoto and every one below 35 is considered wide, making 35 the longest wide-angle and 50 the widest telephoto.

Inside a view camera, everything appears upside down because light travels in straight lines. As light moves through the camera, an image flips at the point of convergence. When focused at infinity, the distance between the point of convergence and the film plane determines a lens’s focal length.

My perfect lens trio is a 28, 50, and 135, and if I had to pick just one, I’m going with the 35.