Can someone tell me what the 12mm lens (in 35mm format) equivalent would be in 4x5" format?
I'm using a dual focal length 4x5" pinhole camera which only gives it's focal lengths in 35mm format terms (12mm/24mm,super wide/wide). I have a chart down to 20mm from my Calumet Catalog, so I know my wide position is a 75mm in 4x5". I just need to know the 12mm! Thanks for the time, Andrew Amundsen (WWPD #98)
