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In this Photoshop tutorial we're going to change the color of the iris that's part of the human eye.在這的Photoshop教程，我們要去改變顏色的虹膜，這部分人眼。 It is easy to adjust using a Mask and a Hue & Saturation adjustment layer.這是很容易調整用面具和色調與飽和度調整層。 Start by making a copy of the background layer, by left clicking on it with the mouse button and dragging it to the New Layer icon ; Photoshop creates a copy of the background layer and makes this new layer active.首先作出一份拷貝的背景層，由左擊，它與鼠標左鍵並拖曳到新的一層圖標;的Photoshop創建一個副本的背景層，使這一新的層主動。
First we have to create a selection.首先我們要創建一個選擇。 Select the Elliptical Marquee tool and then move your cross hair cursor to the exact middle of the iris.選擇橢圓選取框工具，然後提出你的頭髮交叉光標，以準確的中虹膜。
Now hold down the Shift + Alt key and hold the left mouse button.現在按住Shift + ALT鍵，按住鼠標左鍵。 Now draw the circle around the iris.現在提請圈周圍的虹膜。 Leave some extra space as shown in the example.留下一些額外空間，這體現在例子。
With the layer still active, add a mask.同層仍然相當活躍，加上口罩。 Click on the Add Layer Mask icon ,a new mask appears.點擊添加一層面具圖標時，一個新的面具出現。
Also notice that a new icon appears in front of the layer that reminds us that we have a layer mask and that the layer mask is active.也察覺到一個新的圖標出現在面前，該層中提醒我們，我們有一層面具，並認為層假面活躍。 A layer mask also has a double border if it's active and single one if it's not active.一層面具，也有雙重邊界，如果它的活躍和單一如果它不活躍。
With the mask selected press the \ key on your keyboard.與掩膜選定按下\關鍵在於你的鍵盤。 This will show the mask in a transparent red color.這將顯示罩在一個透明的紅顏色。 This will make it easier for us to make the necessary adjustments.這將使得我們更容易作出必要的調整。 You can always turn this transparent mask off by pressing the \ key again.您可以隨時把這種透明面罩小康按下\關鍵。
Go in the menu to Filter?去在菜單過濾？ Blur?朦朧？ Gaussian Blur and slightly blur our mask.高斯模糊及稍為模糊了我們的面具。 Use a radius of about 4 pixels.用一個半徑約40像素。
Normally this should be enough, but we want to include the upper eye lid in our mask, since we don't want to change its color.通常這應該是不夠的，但我們希望包括上眼瞼在我們的面具，因為我們不想改變其顏色。
To do that we have to select black as our foreground color and extend the mask by painting on the upper eye lid with a small soft brush .要做到這一點，我們都選擇黑色作為我們的前景顏色，並延長面具所畫對上眼瞼同一個小軟刷。 You might also consider to extend the mask around the iris.您也可能考慮延長面具周圍的虹膜。 Paint with white to remove parts of the mask.漆白，以消除部分的面具。
Add a Hue & Saturation adjustment layer.添加色調與飽和度調整層。 Now hold down the Alt key and click on the New Adjustment Layer icon .現在按住ALT鍵，並點擊新調整層的圖標。 Don't release the Alt key yet!不釋放ALT鍵，但！ Select Hue/Saturation...選擇色相/飽和度... in the little window that pops up.在小窗口彈出。 The New Layer window pops up.新的層窗口彈出。 Release the Alt key.釋放ALT鍵。 Select the option 'Use previous layer to create clipping mask' and click Ok.選擇'使用前層，以創造裁剪面具' ，並點擊OK 。 The Hue/Saturation window pops up.色相/飽和度窗口彈出。
We're now going to change the hue of the blue colors only, since the iris is blue.現在，我們正在打算改變色調的藍顏色只，由於虹膜是藍色。 Now we slide the hue slider until we have the color that we prefer.現在，我們幻燈片色彩滑塊，直到我們有顏色，我們喜歡。 You also might consider to adjust the saturation slider.你也可以考慮調整飽和度滑塊。
Links you may find interesting -聯繫，你會發現有趣-
- How to Remove Red Eye of digital images using Photoshop 如何去除紅眼的數字圖像利用Photoshop
- How to Create an old postage stamp using Photoshop 如何創造一個老郵票利用Photoshop
- How to Blend Two Images (put one image on another) using Photoshop? 如何融合兩個圖像（提出一個形象的另一個）利用Photoshop ？
- Creating a Bubble over an object using Photoshop 創造了一個泡沫的一個對象利用Photoshop
- How to make an Old Age Poster or Documents using Photoshop 如何使老年海報或文件，利用Photoshop
