TAILIEUCHUNG - Photoshop cs5 cho nhiếp ảnh gia part 51

Mở rộng Latitude qua Merge để HDR Pro Photoshop CS5 đại tu và cải thiện đáng kể các tính năng Merge để HDR. Hợp nhất để HDR Pro là một công cụ để kết hợp tiếp xúc nhiều (lý tưởng 3-7 tiếp xúc của chủ thể giống nhau, mặc dù kỹ thuật bạn có thể sử dụng nó với hai hình ảnh) vào hình ảnh 32-bit một | Try It Open the images called CanyonDark and CanyonLight from go photoshopnature and try combining them using the cookbook approach. Expanding Latitude via Merge to HDR Pro Photoshop CS5 dramatically overhauled and improved the Merge to HDR feature. Merge to HDR Pro is a tool to combine multiple exposures ideally three to seven exposures of the identical subject although technically you can use it with two images into one 32-bit image. Using 32-bit enables the image to have a greatly expanded dynamic range so that the final image can contain detail in shadow areas and in highlights that normally cannot be present in a single image. In fact 32-bit offers more latitude than what you can even see on your monitor. However the 32-bit image can be immediately converted to 16-bit or even 8-bit. Merge to HDR Pro creates an image containing the maximum amount of detail and color information possible with very little work on your part. It ensures that the transitions among the exposures are gradual with no harsh obvious edges. It sounds too good to be true doesn t it In earlier versions nature photographers were likely to experience several difficulties using this tool. If anything changed between exposures a tree branch blowing slightly in the wind a leaf anything moving Merge to HDR often failed to give a good final image. Similarly if there was any camera movement it also didn t work. In CS5 the Auto-Align algorithms have been tremendously improved. In addition you can add a layer mask to an image to hide part of an image to help with objects that move. Although there is still no option in this version of the tool to allow you to manually align the images it works far better than earlier versions. Situations with high contrast and static subjects are best for creating HDR composites. If a scene lends itself to using Merge to HDR Pro follow the same steps we described earlier for taking shots to expand exposure latitude. After you have downloaded your images

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