Re: Photographing trees in autumn

[George L Smyth <GLSmyth@xxxxxxx>]

Hannu Jarventaus wrote:
> 
> I have been using Konica IR 750 film mostly on bright summer days.
> With red filter the leaves come out almost white.
> 
> What happens in autumn, when the leaves are not anymore green?
> Can I still get white leaves, or are they getting darker in
> ir-photographs when the color is changing to yellow, red or brown?
> 
> I have not yet tried this, but maybe someone has, and can tell more.
> 
> Hannu Jarventaus
> Espoo, Finland

I have an explanation of why leaves are so white on my Web page
(Rethinking Infrared Photography) if you want the full explanation.  To
sumarize, chlorophyll is transparent to IR, so what you're seeing is the
reflections from the cell walls.  When this situation changes, so will
the leaves in your images.

george


-- 
 Handmade Photographic Images     
  http://www2.ari.net/glsmyth

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Topic No. 15