[argyllcms] Re: Feature request (and an implied question)

  • From: Ben Goren <ben@xxxxxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 26 Jul 2010 14:41:13 -0700

> One issue to consider is that readings from different light meters are only 
> comparable if they have the same directional characteristics. I think the i1 
> has a light measurement head with a cosine response, while many light meters 
> intended for photographic purpuses have different directional characteristics 
> (e.g. hemispherical), see also http://en.wikipedia.org/wiki/Light_meter

Thanks for the caution. This particular meter has a retractible dome; in the 
retracted position, it&rsquo;s supposed to be a ``flat field'' response that, 
by eyeballing it, would be the same basic geometry as the i1 (though the 
aperture sizes differ, of course).


Other related posts: