Re: Black Bodies and Suchlike Magical Stuff
Re: Black Bodies and Suchlike Magical Stuff
- Subject: Re: Black Bodies and Suchlike Magical Stuff
- From: Derrick Brown <email@hidden>
- Date: Sat, 08 Nov 2003 09:39:31 -0500
On 11/8/03 9:21 AM, "Nick Wheeler" <email@hidden> wrote:
>
Derrick:
>
>
> I would suggest being a little more specific here.
>
> Yes Jeff, you are "profiling the Camera, the "raw converter", and the
>
> "COLOR
>
> TEMPERATURE" of the lighting. Not the "Lighting".
>
>
>
>
This is not completely accurate. Not all light sources are perfect
>
"black body" radiators and emit a continuous spectum. In fact, some
>
light sources are quite discontinuous and have quite narrow band
>
spectra. Metal Halide bulbs, for instance, have almost the exact same
>
color temperature as daylight but emit an entirely different spectrum.
>
For this reason you are actually profiling the lighting, not just the
>
color temperature. This is one of the many reasons that profiling must
>
be done for a specific lighting situation. On the other hand, one might
>
want to preserve the characteristics of a given light source (sunset
>
orange, sodium vapor yellow, snow shadow blue, flourescent green etc).
>
Profiling might be the wrong way to go under these circumstances.
Nick,
Having come through the recent thread, I would be more than happy to discuss
this with you offlist and directly.
Im not saying ACR isnt a great tool, as for your lighting suggestions, I beg
to differ greatly. Im also not saying that Profiling is the ONLY way to do
it.
Instead of continuing here, and since you are local why don9t we use this as
an opportunity to put the methodology I am speaking of to task?
Id rather do than theorize here.
Please feel free to contact me when you have a moment.
All the best
>
Derrick L. Brown
Integrated Color Corporation
81 Rogers Street
N. Billerica, MA 01862
tel: 978-670-1416
fax: 978-670-8701
url: www.integrated-color.com
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