Re: Image Enhancing filters

[P3D Paul Talbot <ptww@xxxxxxxxx>]

DrT writes: 

> One of the interesting items that I bought in Detroit last night is a pair
> of "Image Enhancing" filters for the Realist.  These do some selective
> filtration and change colors depending on the color of light. (snip)
 
These filters are mentioned in "The 35mm Film Source Book" which I
discussed on April 23 (digest 2015), and probably in other sources
more specifically focussed on filters.  I don't have any experience
with them (although I want to try them after reading about them!),
but as I recall (someone correct me if I am wrong) they enhance warm
colors without affecting other colors.  They are especially useful
for enhancing scenes of sunsets or fall foliage without giving an
undesirable tint to other colors.

> Why and how do they work?

I have no idea.  I'll leave that to the more technically-oriented
list members.

Paul Talbot


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