[argyllcms] Re: Spotread -f and flash Guide Number calculation problem,

  • From: Matthieu DUBAIL <matthieu.dubail@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 11 Feb 2011 14:36:25 +0100

> Interesting.  Was the flash mounted on a camera to set the zoom to 50mm? If
> it is a digital camera, does the flash automatically adjusts the zoom to the
> crop? 45*1.5 = 67.5?
>

Nope, the flash was on a tripod, setted manually (zoom factor included).
Actually, only the screened focal number is changed if the DSLR  APS-C focal
format option is chosen in the flash menus. Angles of light and GN doesn't
really change.

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