tailieunhanh - AdobePhotoshop Every tool explained - phần 6

Bây giờ tất cả những gì bạn cần làm là kéo các lựa chọn trên các điểm ảnh mà bạn muốn sử dụng để sửa chữa các vấn đề khu vực. Thời gian này chỉ có các lựa chọn di chuyển phác thảo, không phải các điểm ảnh được lựa chọn, như là trường hợp trong chế độ Điểm đến. | Chapter 5 Magic and Background Erasers One is like the Eraser and Magic Wand in one while the other is ideal for cutting out objects Know the limits In all honesty the Magic Eraser is not one of the best tools in Photoshop s arsenal. It can be useful for quickly erasing something but only works well on a limited range of images. EIn an image such as this it is fairly easy to remove the subject from the background because there is a definite difference in colour between has many ways of doing this you could make a selection using the Magic Wand tool then delete it for instance. E Alternatively you can cut out the middle man or woman as is quite literally the case here by using the Magic Eraser this tool you can click on the background to erase it directly in one click. All colours that fall within the tolerance setting are deleted. Look elsewhere There are a number of third party tools available that do a better job at removing backgrounds than Photoshops Eraser tools. 3 I After a couple of clicks the whole I J I backdrop is erased leaving a nice clean-edged subject surrounded by transparent pixels. This is useful if you then want to save the image as a GIF for example with transparency intact. EOur Dog image proves to be far more difficult a proposition however. Although the Magic Eraser works fairly well on the sky on the grass it doesn t do so well. This is because the grass is so varied in colour and brightness that the Eraser has a hard job of finding the right colours to remove. 66 Focus Guide - Adobe Photoshop Tool Techniques Gradients Fills and Erasing 1 E Turning off the Contiguous option might improve makes the tool search the whole image for similar colours rather than just examining pixels that are connected to the starting point. Unfortunately we end up losing most of our dog as well when we try this method. E Using the Background Eraser tool you ll find it in the Eraser tool group in the sixth row of the toolbar .