Back Focus Back focal distance, meaning the distance from the tip of the lens' furthest rear surface to the film/image sensor surface where the image is focused.
Front focal length (FFL) or Front focal distance (FFD) is the distance from the front focal point of the system to the vertex of the first optical surface.[1]
Back focal length (BFL) or Back focal distance (BFD) is the distance from ...
 See also: Sensor, Photograph, Back, View, Sharp
  
|
RSS
