What is the "digital makeup" of the magic Hand of light and shadow?

Shadow Magic Hand "digital supplement light" prototype began a few years ago I designed a PS action, then named "Small Bear Patch Plate", may be senior DC altar friends still some impression. The effect of the light is to save the exposed parts of the photo. For example, a backlit shot of a human face, or a shadow object under the sky, etc.

For example, the following DPReview proofs, the original image of the normal sky exposure, the pillars of the very dark, can not see clearly. And after the digital light processing, the pillars of the details are all out, the original cruise ship at the bottom of the dark place also became bright, but at the same time, the exposure of the sky is still just good, did not occur unnatural changes. Used, the original brightness of the column contrast is still maintained, not like a simple adjustment of brightness after the contrast lost.

Below I give you a detailed explanation of the role of three parameters of the plate. The above diagram adjusts to use the parameter is this:

A total of three parameters:

1, scope: The scope is mainly used to control the photo need to fill the area of light. The smaller the number, the smaller the area of the patch. This has a benefit, when it is smaller, do not affect the light of the scene in the exposure, as in the case of the 0, the sky exposure will not be affected, and the dark place still can be filled with light.

2, Brightness: Determine a good range, improve brightness, you can directly and effectively improve the brightness of the dark. Generally this parameter set below 80 is more appropriate. If it is too high, some photos may be affected by contrast.

3, retroactive: If the photos of the exposure situation is more serious, improve brightness, dark place or very dark, the effect is not obvious, then need to use this parameter. Increase the value of this parameter, can effectively improve the brightness of the dark part!

Finally, it is recommended that you use the photo experiment I provided in the above example to experience. Digital fill This function, is a light magic hand more unique a function, easy to use, and is worth a.