Get more secrets to Editing Digital Photography
by Dan Brown
In order to edit pictures successfully, one must have the proper tools, just as when processing photos in a darkroom. In the latter, chemicals, exposure times, and certain materials can affect the outcome of a photograph. In today's darkrooms, photo editing programs, one must know how to use the tools at hand to create the results wanted. Using photo editing programs makes editing much easier. It is far less expensive than working in a traditional darkroom and far less time-consuming if you wish it to be. However, you may also take your time editing to come out with the best results. Mistakes are not embedded in stone, for there's always the "undo" button to rely on. Using your software, you can improve an image, or change it to something completely different. The resolution of your computer's monitor can greatly affect the outcome of your photos. This is the amount of pixels there are on the screen. The more there are, generally, the better the quality of the images. Making sure you have a monitor that is suited for photo editing is an important part of the process. However, you must remember that certain resolutions are meant for certain sized monitors. A large resolution on a small monitor makes everything too small, whereas the opposite makes everything too big. Make sure you know what resolution your monitor is made for.
Possibly one of the most confusing aspects of dealing with digital imagery is resolution-specifically, what it really is and how changing it affects an image. Simply put, image resolution is the number of pixels displayed per unit of printed length in an image. It's a measurement used for printing and it's usually stated in pixels per inch (ppi-used when referencing screen images) or dots per inch (dpi-used in printing because printers print dots). The way resolution affects an image is thus: For a given number of pixels in the width or height of an image, the higher the resolution, the closer the printer packs those pixels together in order to make a beautifully smooth and sharp print. The closer the pixels are packed together, the smaller the image will be physically when printed, and vice versa. Because our monitors can only display a certain amount of information that our eyeballs/brains can process, resolution matters only to printing devices. That's right, it doesn't mean a hill of beans until that image is headed for a printer because only a printer can do anything with the resolution measurement.
There are many different photo-editing programs out there. Many people believe that the level of difficulty of the program indicates its quality. However, many programs are quite simple to use and are of high quality. Several programs will make adjustments for you based on one entered specification, whereas others require you to perform several steps yourself to get the desired effect. Depending on what you're most comfortable with, whether it's pressing a button and having the rest done for you, or doing it all yourself, not every program will be for you. Choose according to your level of experience and your needs in the program.
When photos are saved on a computer, they frequently become slightly blurred. They are not necessarily so blurry that you can't see the image; they are merely not as clear as they could be. Just about all photo-editing programs have a tool that allows you to sharpen your image. When your image could use some sharper detail, this is the option you want to use. It makes for a much better-looking picture. Some cameras have the tool built in, though sometimes that is not enough, and it may have to be done again with your editing software.
Sharpening is one of the most impressive transformations you can apply to an image since it seems to bring out image detail that was not there before. What it actually does, however, is to emphasize edges in the image and make them easier for the eye to pick out -- while the visual effect is to make the image seem sharper, no new details are actually created. The first step in sharpening an image is to blur it slightly. Next, the original image and the blurred version are compared one pixel at a time. If a pixel is brighter than the blurred version it is lightened further; if a pixel is darker than the blurred version, it is darkened. The result is to increase the contrast between each pixel and its neighbors. The nature of the sharpening is influenced by the blurring radius used and the extent to which the differences between each pixel and its neighbor are exaggerated.
Often times images are posted on the web and resized with HTML code. This leads to an image full of jagged edges. By resizing your image in an image editing program, such as Adobe Photoshop, you can utilize smoothing algorithms that will make an image look much smoother. Additionally, resizing the image will reduce the file size, allowing a web page to load faster than usual. When you resize an image, you are resampling an image. In other words, your program is taking all of the image data and redrawing the pixels so that the image is the desired size. However, when you ask the application to increase the size of the image, the size of each pixel is increased, which inevitably leads to degradation of the image. When you resize an image, you can also change image resolution, to keep the quality of your image.
At times the subject of a picture is lost in the surrounding parts of a picture. If this happens, you can always crop your picture. This means cutting down the picture to a certain size. There are many ways to do this in terms of the size of cropping. In just about every photo editing program there is a cropping tool, and you can experiment with the size of the area that you take out of your photograph. If you don't like what you've done, all you have to do is click "undo."
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