Re: snow

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On  2 Dec 98 at 16:03, Andrew Davidhazy wrote:

> Willem-Jan Markerink wrote:
> 
> > On  2 Dec 98 at 16:35, Claudio Mori wrote:
> >
> > > can someone tell me what happens if I shoot the snow with an EIR film? I
> > > mean: the white of the snow remains white or not?
> >
> > It remains white, when used with a #12 medium-yellow.
> > Gives a much nicer color palette than in summer, less overwhelming
> > red-dominance, and the white contrasts nicely with red foliage/trees,
> > something that would in summer be red grass below red foliage/trees,
> > ie neither contrast nor disctinction.
> > Not sure what happens with other filters....keep in mind that both
> > HIE and EIR are UV-sensitive as well (even more so than they are for
> > IR!), and snow reflects a lot of UV....
> 
> Willem-Jan,
> 
> While it may be true that snow reflects a lot of UV when the EIR film is used
> properly and with the yellow filter over the camera lens, litle or no UV
> should be falling on the film. No?

Yes, I was merely pondering about other filters....yellow/orange/red
will block UV, being all long-pass filters (although some odd reds
leak UV according to my old Wratten catalog!), but some other,
weirder/experimental filters might not (color compensating, some
types of green etc). It's not so much an factor to plan, more a 
factor to keep in mind when analysing the final images....

--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************