reh1366@hou2b.UUCP (R.HOWARD) (05/10/85)
I once saw a table claiming to convert exposure readings on a camera to ambient footcandles. It involved setting the ASA to 100 and fixing the shutter speed. The f stop at the proper exposure was directly related to foodcandles. The table was weird in that it didn't scale in any reasonable way with f-stop (ie, sqrt, power law, etc.) Anybody know the real conversion? Thanks. Rich Howard hou2b!reh1366