My own PS technique - DPChallenge Forums

08/21/2004 08:46:34 AM · #1

I accidently created my own PS technique.
In "The Photoshop Book" by S. Kelby he describes a technigue to correct color gamma using Threshold and Curves.
Trying to repeat the technique from memory, I have been doing it using Treshold and Levels.
Kelby suggests using the eyedropper in Curves to identify the black and white points of your image thus adjusting the Curve.
I have been doing the same thing only in Levels. If I select a color as my whitepoint I can change the whole image.
The results are pretty neat IMHO.
Here are some examples. C&C appreciated.

I took this in the spring, but by selecting a yellow as the whitepoint the image has a fall look.

Same image, different whitepoint, gave me a fantasy look.

Here I selected the darkest area of my white Background (shadow) as my whitepoint, giving me isolation of my subject.

All legal under Basic editing rules.

suemack

Canon EF 24-105mm f/4.0L IS

08/21/2004 09:10:53 AM · #2

More details please :) Love the effect, especially on the flower.

sue

Nikon AF Nikkor 50mm f/1.8D

08/21/2004 12:35:56 PM · #3

Originally posted by suemack:

More details please :) Love the effect, especially on the flower.

sue

Open your image. Image>Adjustments>Levels. In the Levels dialog box there are three eye droppers (under the "Options..." button). Set your black point by selecting the eye dropper on the left, and clicking on the darkest area of your image. Now select the eye dropper on the right to set the white point. In the Bee Balm image I clicked on a shadow, making the shadow and everything lighter then the shadow white.
If you click on a colored area of your image, telling PS that that is white, all of the colors in your image will be adjusted.

David.C

08/21/2004 12:46:34 PM · #4

Originally posted by spydr:

Originally posted by suemack:
More details please :) Love the effect, especially on the flower.

sue

Open your image. Image>Adjustments>Levels. In the Levels dialog box there are three eye droppers (under the "Options..." button). Set your black point by selecting the eye dropper on the left, and clicking on the darkest area of your image. Now select the eye dropper on the right to set the white point. In the Bee Balm image I clicked on a shadow, making the shadow and everything lighter then the shadow white.
If you click on a colored area of your image, telling PS that that is white, all of the colors in your image will be adjusted.

Don't mean to hijack, but moodville's tutorial (How to remove a color cast from an image) has a detailed discription of the steps using curves -- just substitute levels instead.

@spydr: Have you tried the same white, black and mid-points in curves as well? How does the effect differ?

David

08/21/2004 01:16:55 PM · #5

Originally posted by Britannica:

Originally posted by spydr:

Originally posted by suemack:
More details please :) Love the effect, especially on the flower.

sue

Open your image. Image>Adjustments>Levels. In the Levels dialog box there are three eye droppers (under the "Options..." button). Set your black point by selecting the eye dropper on the left, and clicking on the darkest area of your image. Now select the eye dropper on the right to set the white point. In the Bee Balm image I clicked on a shadow, making the shadow and everything lighter then the shadow white.
If you click on a colored area of your image, telling PS that that is white, all of the colors in your image will be adjusted.

Don't mean to hijack, but moodville's tutorial (How to remove a color cast from an image) has a detailed discription of the steps using curves -- just substitute levels instead.

@spydr: Have you tried the same white, black and mid-points in curves as well? How does the effect differ?

David

Dave,
As far as removing the backgound it is more or less the same. In fact, the technique that Moodville demonstrats is what I was trying to do from memory, and ended up doing wrong/different.
The difference is that you can change the color scheme of the pic. There are other tools to adjust color (replace,hue/sat etc.) but I thought that it was cool change the feel of an image basically w/ one click of the mouse.

digistoune

08/21/2004 01:23:58 PM · #6

What a happy "accident" - thanks for sharing! Can't wait to see what happens with some of my own images ;-)

08/21/2004 02:26:38 PM · #7

Here's an example of changing the color.

original

challenge entry.

I selected the green of the car as my white point.

kyebosh

Canon EF 80-200mm f/2.8L

08/21/2004 03:12:50 PM · #8

is this allowed for basic edit competition?

admart01