How to Vary Color Temperature of Image Illumination

How to Vary Color Temperature of Image Illumination

Post by jim evan » Thu, 31 Mar 2005 12:37:55


I would swear that a while back I found a place in Photoshop where I
could vary the color temperature of the image. My memory of it is
that as I moved a slider the color temperature value changed in a text
box such that, for example, I could vary the color temperature from
10000?K (cold blue/white light) to 4000?K (warm/orange light) and
the image cast went from cold to warm. I just spent about 45 minutes
hunting for this control (filter?) without success. I'm about to
conclude I dreamed it. Anybody know if PS has this feature and if so
where I can find it?

jim
 
 
 

How to Vary Color Temperature of Image Illumination

Post by Andrew Mor » Thu, 31 Mar 2005 21:38:15

Would that have been when you were importing a .raw image?

Andrew

 
 
 

How to Vary Color Temperature of Image Illumination

Post by jjs » Thu, 31 Mar 2005 23:00:08


Would that be the photo filters? (image adjustment menu)?
 
 
 

How to Vary Color Temperature of Image Illumination

Post by Bria » Thu, 31 Mar 2005 23:29:16


Hi Jim,

There are a couple of sites on the net that have "free" photographic
filter simulators. One is a wratten filter simulator, the other is a
cokin/hoya/kodak filter simulator. They appear to be fairly authentic at
first glance.

If this sounds of any interest to you I can dig up the URL's for those
sites for you.

Brian.
 
 
 

How to Vary Color Temperature of Image Illumination

Post by jim evan » Fri, 01 Apr 2005 00:25:42

On Thu, 31 Mar 2005 00:29:16 +1000, Brian < XXXX@XXXXX.COM >




Thanks to everyone who replied.

As jjs mentioned, CS has wratten filter simulators. What I was
imagining is a continuous scale that runs up and down the color
temperature scale. I guess I just dreamed it.

Oh yes, no I didn't see it while importing raw but that's the kind of
thing I'm looking for.

jim
 
 
 

How to Vary Color Temperature of Image Illumination

Post by Craig Flo » Fri, 01 Apr 2005 01:36:44

One other way is to click image > adjustments > color balance.
Then you do have sliders to change color balance.

Craig
 
 
 

How to Vary Color Temperature of Image Illumination

Post by Bria » Fri, 01 Apr 2005 16:40:02

>>Hi Jim,

Hi Jim,

I realise the filter simulators are not what you are wanting. Just
wanted to mention that the sites I was talking about offer a far more
complete and comrephensive set of filters than the 4 or so wratten
filters in PS by default.

Regards,
Brian.
 
 
 

How to Vary Color Temperature of Image Illumination

Post by Mike G » Mon, 04 Apr 2005 04:17:27


There's a shareware Photoshop plugin that does just what you are asking
about at:

AGD Color Temperature & Exposure correction Plug-In
http://www.yqcomputer.com/

I have used it on a couple of occasions and it seems to work fine. I
can't tell from the website what the limitations are in the free
download version (I haven't found any so far), but there is a built-in
15 second delay (nag screen) when you select it from the 'Filter' menu
within photoshop. Works with V6, 7, CS.