Nice reference. Of course you could have a switchable illuminant setup; eg a set of LEDs or. Edmund On Wed, Jun 5, 2013 at 11:59 PM, Ben Goren <ben@trumpetpower.com> wrote:
On Jun 5, 2013, at 2:53 PM, edmund ronald <edmundronald@gmail.com> wrote:
I jest not, it's the obvious way to go. The only problem really is getting filters that fit the lens you are using, maybe a linear strip is the way to do it. Incidentally, I guess if you add enough filters you will have a teleradiometer :)
Dr. Berns has shown that one or two filters at most (in addition to the unfiltered view) is all you need to, yes, essentially replicate a teleradiometer. See http://art-si.org/ for lots of information.
And 4" Wratten (or other) gel filters fit in many standard filter holders, such as those made by Lee or Cokin. The only challenge is how quickly you want to swap them. In the studio, it's not a problem. In the wild....
Cheers,
b&