[Leica] Fw: Advice sought on colour-correcting magenta cast black fabrics in Photoshop

[rgacpa at yahoo.com (Bob Adler)]

Sorry, meant the UV/IR filter many use for the M8...
 Bob Adler
Palo Alto, CA
http://www.rgaphoto.com



----- Forwarded Message ----
From: Bob Adler <rgacpa at yahoo.com>
To: Leica Users Group <lug at leica-users.org>
Sent: Thu, March 18, 2010 7:35:59 AM
Subject: Re: [Leica] Advice sought on colour-correcting magenta cast black 
fabrics in Photoshop


Easiest is to put a UV filter on your lens and kill the color cast at the 
start.
After that it can be a lot like putting humpty dumpty back together again 
IMO.
 Bob Adler
Palo Alto, CA
http://www.rgaphoto.com




________________________________
From: Peter Cheyne <geordiepete211 at yahoo.co.uk>
To: lug at leica-users.org
Sent: Thu, March 18, 2010 2:19:46 AM
Subject: [Leica] Advice sought on colour-correcting magenta cast black 
fabrics in Photoshop

I would like to make some prints taken from M8 photos.  A few of these 
photos have the magenta cast on black fabrics photographed in tungsten 
light.  I have used
the selective brush in Lightroom to darken the fabric in photo, but the tool 
cannot be used in other photos where it's application proved too fiddly.  I 
have heard that
it is easier to turn this magenta-purple into black in Photoshop (I use 
Photoshop 7, but haven't used it for a while).

Could anyone please share with me a simple workflow to colour-correct M8 
photos in Photoshop?

Here is a sample photo typical of what I wish to correct.  My t-shirt is 
actually close to that colour, though a little bluer and darker.  Her top 
should be almost black.
I don't mind my t-shirt turning blacker in the process.

http://www.facebook.com/photo.php?pid=4901228&id=671857576

Peter Cheyne

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