TAILIEUCHUNG - Photoshop cs5 cho nhiếp ảnh gia part 46

Loại bỏ màu Diễn viên có một số phương pháp tiếp cận khác nhau để loại bỏ màu phôi. phụ thuộc vào hoàn cảnh cá nhân, một trong những phương pháp tiếp cận có thể sẽ thích hợp hơn trong một tình huống cụ thể, trong khi một cách tiếp cận có thể có hiệu quả trong một. Vì lý do đó, chúng tôi sẽ trình bày một số cách để đối phó với phôi màu sắc, một số trong đó là mục tiêu và một số chủ quan. | the lovely warm yellow red quality it imparts to their subjects as opposed to the more neutral or cooler light that may occur in the middle of the day. Removing Color Casts There are a number of different approaches to removing color casts. Depending upon the individual circumstances one approach is likely to be preferable in a particular situation whereas another approach may be more effective in another. For that reason we ll present several ways to deal with color casts some of which are objective and some subjective. Note If while you are shooting you know that you will want to make sure the colors are as accurate as possible take a shot with a gray card or other neutral gray object in the frame. That way you can use it as the source for the eyedropper and ensure accurate neutral color. Subjective Methods for Removing a Color Cast First we ll look at the subjective ways to remove a color cast from your image. Some of these approaches allow Photoshop to do most of the work for you while others offer considerable individual control over the process and invite a great deal of personal preference. Using the Gray Eyedropper If there s an area that you know should be neutral it can be any tonality from almost white to almost black and any shade of gray in between there is a very simple way to eliminate the color cast in your picture. 1. Create a new Levels adjustment layer by clicking the Adjustments panel icon and selecting Levels. 2. Take the time to double-click the word Levels in the Layers panel and rename the layer we use the name color cast. That way if you return to this file later assuming you save it with your layers intact you ll know exactly what you did in each layer. 3. Click the gray middle eyedropper to select it and then click the area of your image that should be neutral. Photoshop will automatically define the point you click as neutral that is having equal red green and blue values and will remap the rest of the image accordingly. You can do the .

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