Photographing trees in autumn with Konica IR

[Hannu Jarventaus <teklahj@xxxxxxxx>]

On Wed, 2 Oct 1996, George L Smyth wrote:

> 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 - I photographed two rolls of Konica IR 750 through red filter
(B+W 091) and my results show, that also yellow and red leaves are
white (or very light grey) in the pictures. So I think that all
leaves, as long as they are on the trees, are white in the pictures.
I have several pictures of trees with different coloured leaves, and in 
the print I can not clearly see which tree has green leaves and which
has yellow or red. Maybe there still are some differences.
(One difference is that they are different trees: birch, aspen, maple...)

Hannu


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Topic No. 2