Image editors (also known as photo editors) allow you to create and modify graphics and photographic images. This includes tasks such as painting and drawing, color correction, photo enhancement, creating special effects, converting images, and adding text to graphics. Your image editor will probably be your most frequently used tool for working with graphics so it should be flexible and intuitive. Many software programs are available for enhancing and otherwise working with bitmap images, but unless they can perform all of the tasks above sufficiently, they should only be considered as companion tools to your primary photo editing application.
The display resolution of a digital television or computer display typically refers to the number of distinct pixels in each dimension that can be displayed. Some commentators also use this term to indicate a range of input formats that the display's input electronics will accept and often include formats greater than the screen's native grid size even though they have to be down-scaled to match the screen's parameters. An example of pixel shape affecting "resolution" or perceived sharpness is displaying more information in a smaller area using a higher resolution, which makes the image much clearer. However, newer LCD displays and such are fixed at a certain resolution; making the resolution lower on these kinds of screens will greatly decrease sharpness, as an interpolation process is used to "fix" the non-native resolution input into the displays native resolution output.
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.
Digital cameras, even relatively cheap ones, take incredibly large images. However, looks can be deceiving and, while the pictures may look big onscreen, they may look disappointing when you try to adjust them for printing, emailing, or long term storage. They're best left untouched, if possible, so that you have more flexibility later. All photo editing software will have a command for changing the pixel dimensions of an image. Look for a command called "Image Size," "Resize," or "Resample." When you use this command you will be presented with a dialog box for entering the exact pixels you wish to use.
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."
