TAILIEUCHUNG - Photoshop cs5 cho nhiếp ảnh gia part 7

Hình ảnh để chụp ảnh Composite Sau đó có bao nhiêu lần bạn nhìn lên và nhận xét về những đám mây lớn hay hoàng hôn đẹp nhưng không đưa hình ảnh bởi vì các yếu tố tiền cảnh bị mất tích? Hoặc ngược lại, bạn tìm thấy một chủ đề lớn, có lẽ một con chim tuyệt vời hoặc đặt ra một cảnh tuyệt đẹp, nhưng bầu trời hoặc nền đã được hoàn toàn blah | Photographing Images to Composite Later How many times have you looked up and commented on the great clouds or beautiful sunset but not taken the picture because foreground elements were missing Or the opposite you found a great subject perhaps a bird posing wonderfully or a gorgeous scene but the sky or background was completely blah Or you could tell there was just too much contrast to be able to capture the picture in a single shot When you are in the field with your camera it s important to remember that Photoshop enables you to combine images in a seemingly infinite variety of ways. You have to adjust your thinking to include seeing the potential for an image. Expanding Camera Capabilities Sometimes you see a situation and know that you can t capture it in a single shot because of the technical limitations of your equipment. Photoshop provides ways to combine shots to create images close to what you can see but that are not possible to capture with a single exposure. Your eyes can see a much greater range of tonalities than can your camera where the dynamic range is limited to five to six stops of lights for digital captures and slide film. This means although your eyes may be able to see detail in both the highlights and the shadows in a scene today s cameras may not be able to do so within a single exposure. The solution is to take a series of exposures making sure you capture detail in all parts of the pictures. This could mean two or more exposures varying at least one stop each. Dynamic Range and HDR Images It s helpful to understand exactly what dynamic range means and what constitutes an HDR image. Dynamic Range The range between the brightest and darkest points of an image. High Dynamic Range HDR Images An HDR image contains a far wider dynamic range than can be displayed on a screen or printed on a printer. HDR images are often created from multiple exposures of one scene and are stored in special file formats. They are of interest to photographers .

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