[Tig] instinctive contrast

[Michael Bittle]

<audio guy comments on color science - hide the women and children!>


Could it be that what we perceive as contrast is not purely function  
of black and white?

If I want to enhance the sound of a bass or kick drum, I can  
sometimes get good effect by playing around with 200hz, this sharpens  
the attack rather than the fundamental but the  ear/brain  
extrapolates to give the sensation of 'more bass' or 'better bass  
definition'.  Sort of like getting better 'black' by adjusting  
'blue' (don't know if that works, just using a metaphor)?  So maybe,  
just maybe, there is 'contrast' information from the eye/brain  
perspective, contained in color difference data as well.

Just wondering...
Mike


On Mar 18, 2007, at 1:46 PM, Rob Lingelbach wrote:

> Thanks to Cintel International for support in 2007.  http:// 
> www.colorist.org/wiki3
> ====
>
>
>
> On Mar 18, 2007, at 1:42 AM, S. T. Nottingham III wrote:
>
>> I am sure most good engineers could give you a technical  
>> explanation of this
>> phenomena, and for someone on the level of Dave Tosh (whom I  
>> really admire
>> and respect),
>
> hear, hear.
>
> I agree with everything you wrote Tom and appreciate the reply.
> I had the opportunity not long ago to test, for a commercial that
> would air in b+w, shooting on various color stocks and shooting on
> b+w stock.  Needless to say the b+w stock won, for the reasons you
> mentioned.
>
> Forgetting film for a moment, and just talking about an 'image', the
> question still remains for me: why is it we must add contrast to an
> image that is originally in color, when we pull out the color?  I'm
> in search of a scientific explanation; I've known about the phenomenon
> since the 1970s, when I first sat in the chair.
>
> Your dissertation on luminance and chroma deserves a place on the  
> wiki,
> I'll wait for this thread to spin out and combine it with other  
> possible
> responses in the technical discussions section.
>
> Rob
>
> --
> Rob Lingelbach
> http://www.colorist.org/robhome.html
> rob at colorist.org  rob at lingelbach.us
>
>
>
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