本教程介绍常见的投射光线的制作方法。大致过程：打开素材以后，把素材图片复制一层，用调色工具或通道等把高光部分单独提取出来。然后用滤镜做出光线的效果，最后改变图层模式，再用蒙版修饰一下即可。
原图
![](https://wkrtcs.bdimg.com/rtcs/image?w=502&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"502","h":"650","dataType":"jpeg","c":"word/media/image1.png","imgOriW":502,"imgOriH":650})
最终效果
![](https://wkrtcs.bdimg.com/rtcs/image?w=502&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"502","h":"650","dataType":"jpeg","c":"word/media/image2.png","imgOriW":502,"imgOriH":650})
1、打开原图，ctrl+J复制图层。
![](https://wkrtcs.bdimg.com/rtcs/image?w=438&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"438","h":"426","dataType":"jpeg","c":"word/media/image3.png","imgOriW":440,"imgOriH":427})
2、Ctrl+L调整色阶，直至窗户的光线变得很白很亮。
![](https://wkrtcs.bdimg.com/rtcs/image?w=461&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"461","h":"541","dataType":"jpeg","c":"word/media/image4.png","imgOriW":463,"imgOriH":543})
3、选择画笔工具，前景色设为黑色，涂去室内的一切光线。
![](https://wkrtcs.bdimg.com/rtcs/image?w=458&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"458","h":"536","dataType":"jpeg","c":"word/media/image5.png","imgOriW":460,"imgOriH":536})
4、将此图层设为“滤色”模式。
![](https://wkrtcs.bdimg.com/rtcs/image?w=449&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"449","h":"481","dataType":"jpeg","c":"word/media/image6.png","imgOriW":450,"imgOriH":481})
5、滤镜——模糊——径向模糊。注意：中心模糊位置定位到图中窗户的位置。
![](https://wkrtcs.bdimg.com/rtcs/image?w=397&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"397","h":"521","dataType":"jpeg","c":"word/media/image7.png","imgOriW":400,"imgOriH":524})
6、Ctrl+J把当前图层复制一层，按ctrl+F加强一次。然后再按Ctrl+J复制一层，按Ctrl+F加强。得到的两个图层的混合模式都为“滤色”。
![](https://wkrtcs.bdimg.com/rtcs/image?w=455&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"455","h":"588","dataType":"jpeg","c":"word/media/image8.png","imgOriW":457,"imgOriH":589})
7、点击最顶层图层，ctrl+E合并，直至剩下图层1，混合模式为“滤色”。
![](https://wkrtcs.bdimg.com/rtcs/image?w=475&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"475","h":"527","dataType":"jpeg","c":"word/media/image9.png","imgOriW":477,"imgOriH":527})
8、Ctrl+U调整光线饱和度，本例中我们只让光线发出自然的白色光。
![](https://wkrtcs.bdimg.com/rtcs/image?w=397&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"397","h":"521","dataType":"jpeg","c":"word/media/image10.png","imgOriW":400,"imgOriH":524})
9、添加图层蒙版，涂去窗户左侧边缘部分的光线。
![](https://wkrtcs.bdimg.com/rtcs/image?w=501&md5sum=e02b1e924bf3f3737bc79a1e89f89c22&sign=dd6a09a5d1&rtcs_flag=1&rtcs_ver=3.1&l=webapp&bucketNum=21&ipr={"t":"img","w":"501","h":"648","dataType":"jpeg","c":"word/media/image2.png","imgOriW":502,"imgOriH":650})
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