Quote Originally Posted by TheFlyingCamera View Post
Nobody said "legendary" status had to be rational or logical. The mythology benefits those who know better, as it keeps quite excellent lenses off the radar. What is known about the Dagors though is that they do have very substantial image circles for their focal length - not quite Hypergon or Protar, but nonetheless, impressive.
Based on my experience enlarging negatives made by six different Dagors of different focal lengths from 6 to 14 inches, Dagors cover about 65 to 70 degrees, just like your average Plasmat. That huge coverage is one of the legends. "Coverage" and "Illumination" are two separate concepts.