Curve is also the most important commands to adjust the image, one of an image histogram to normal, the need curve is used to make fine-tuning the image.

in the absence of talks, I should first talk with you these two words tactic:

1 point to change the tone light and dark shadow;

2-point control Image contrast;

3 points, raising dark level;

create color separation of 4 points.

Original

PS techniques: curve adjustment map,


1, open curve panel, click on the curve, you can create a control point on the curve can have on a total of 16 control points, each control point corresponds to a gray-scale of the corresponding gray-scale, which control point should not, and drag the mouse outside the box, this point was removed.

PS techniques: curve adjustment chart


2, in the middle of the curve to create a control point, will hold up to this point with the mouse movement, you can see the image change bright.

PS techniques: curve adjustment chart


3, the curve moves down this point, you can see the image tune darken the shadow, that is, said that a control point move up or down can change the relationship between the image shadow tone shading.

PS techniques: curve adjustment chart


4, moving the curve control points should be up and down vertical movement, should not be holding down a control point at random diagonal move, because this move is not corresponding to this control point, the original gray-scale relationship.

PS techniques: curve adjustment chart


5, the curve to create two control points, these two points, pull up and down, so that curve," S" shape, thus improving the image contrast, this usage is the most common.

PS techniques: curve adjustment chart


6, the curve to create three control points, the middle point does not move, would be two points on either side of a little up to point curve" M" shape, so that the curve is mainly used at Home, the level of the image in the dark, especially for large-scale dark tone-based images.

PS techniques: curve adjustment chart


7, the curve to create four control points, these four points, staggered opened, you can make the image color produced a strong, strange changes, this effect is similar to color photography color separation color darkroom, this image gives the color separation effect will a special sense of visual impact, and occasionally for this may be, must not be multi-purpose.

PS techniques: curve adjustment chart


remember the curve of 1234 points to adjust the use of:

1 point to change the tone light and dark shadow;

2-point control image contrast;

3 points, raising dark level;

4 points generated color separation.
This chapterfrom the:Design and Material (http://www.q60.org),copy Please keep this line.