????????????? tu talk bout old tipe pikchuers weer yu put in film
after yu fill up a roll av film, yu send it off tu be developed
& a week later, yu get envelope that hav "prints" & "negativs"
& the negativs R much smaller than the prints ????????????????
& then yu had sumwon blo up 1 pik tu become 4 inch bi 6 inch ??????
& long side av negativ=24mm
maebee the 24mm got bloed up tu become the 4 inch ??????????
so yu wanna no how big is 4inch / 24 mm ????????
4 inch*2.54=10.16 cm=101.6 mm
101.6/24=4.23333333333...