Just leave the color filters at home. There's nothing they can do that
can't be done (and done better) in post processing.
As to using the color filters with a positive color image to produce a
post-processed B&W, I don't think that's going to work. Remember that
those red, orange, yellow, green filters are meant to work with negative
film. They are filtering the complementary colors of the final positive
image. In this RGB color wheel
<http://en.wikipedia.org/wiki/Complementary_color#mediaviewer/File:RBG_color_wheel.svg>
note that the yellow, orange and red (which you associate with darker
skies and contrasty clouds on B&W images) are filtering the blue, azure
and cyan on the opposite sides of the wheel. When working with positive
RGB images one must filter the positive color as you do when working
with the software. Imagine what you'd get if you stuck these red,
yellow and orange filters over a lens shooting an Ektachrome image. Not
what you'd want although it would work with color negative film which
you could later convert or print as B&W if desired.
Chuck Norcutt
On 6/15/2014 5:19 PM, Moose wrote:
On 6/15/2014 1:43 PM, Chris Trask wrote:
...
So, if I want to make a B&W photo that can be adjusted with the
emulated filters, I simply take a good quality RAW (preferable) of
SHQ colour photo
Just 'cause there has been some confusion in this thread, I assume the
"of" in "RAW (preferable) of SHQ colour photo" is a typo, and you meant
to type "or".
and do the editing and conversion later. If I want to use the
glass filters, I take a colour photo with the filter(s) in place and
do the B%W conversion later.
This brings up an intersting thought, though I have to see if
it can be done. Since I have all these glass filters, I should be
able to take a series of colour photos of a dead white card using
each filter, save those images an a suitable format, then later merge
them with a colour subject photo to achieve customised B&W photos
with any colour of filtering.
I don't believe this will work. You may take the shots of an IT8 target
to create ICC color profiles which may then be used to do what you want.
Moose in Profile
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