Please can someone explain how the Angle of View (in degrees) relates to the Image Circle Coverage (in mm) as quoted in View Camera Magazine lens tables etc?
I realise that the term 'angle of view' has different meaning when used by view camera users compared with 35mm users, and understand the 35mm users version (2*arctan (format diameter/focal length).
However I am struggling with the relationship for view cameras where I see 72 degrees coverage etc quoted.
Thanks for any help on this.