Tham khảo tài liệu 'professional information technology-programming book part 38', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Photoshop Features Especially Useful for Making Montages Making montages can be much more complex than making collages because the bits and pieces of photos that make up the whole have to look as though they were all photographed in the same place and at the same time. That is the angle of lighting of objects in the background photo has to match in the lighting of the imported objects. So does the color temperature the perspective and the angle of view of each imported object. To make matters worse it is often impossibleor at least impracticalto find photos that are an exact match. This section will show you some Photoshop features that help you credibly fake the appearance of the matching photo. Especially notable among these features are the new Warp and Smart Object. . The Smart Object Advantage Smart Object is a new feature in Photoshop CS2 that can go a long way toward minimizing the horrendous degree of destructive editing that traditionally occurs when combining photographs. The basic idea of the Smart Object is that one image can be used in multiple documents or places in the same document without ever really being there. The Smart Object is simply stored in its own file which acquires a PSB extension and mathematically referenced to as the needed changes in appearance happen when that image appears in another place. Moreover there s no limit to the number of other places in which it can appear. You could for instance have a whole flock of birds flying across a sky in different sizes and rotational and transformational attitudes. Even after all this nothing has really happened to the original image of the bird. NOTE Smart Object maintains this nondestructive editing capability as long as you don t change the bits in the image which presently only can happen by converting the layer back into a bitmap or changing the original image s bitmap. Operations that can occur only on a rasterized or bitmapped image include most filter effects painting on the
