Many people have trouble knowing how or whether or not in the first place to edit their digital photos. Most photographs just don't turn out the way you imagined; they might be too dark, or too red, or too big. Depending on what you need in a digital photo-editing program, you may want to get a more simple or a slightly more advanced software. For example, if all you're planning on doing is correcting a few minor details in a picture, you want to go as simple as possible. If you're planning on adding things to pictures or taking them out, or changing the color of objects, you will want a more advanced program.
New and expert photographers alike have experienced it. You take an otherwise perfect picture of friends or family but there's one major flaw: glowing red eyes. Here are some reliable tips for avoiding red-eye in the first place: whenever possible, try not to use a flash. If you have to use a flash, ask your subject to look toward the camera, but not directly at the lens. Also, use additional light sources in the room. You can also take pictures during the day, because at night the pupils will dilate meaning red-eye will be a certainty. Lastly, you can stand farther away from your subject.
At some point or other you're likely going to want to change the size of a digital photo. This will usually be to serve an intended purpose such as emailing a smaller sized version of your original photo. A common size change for a digital photo is cropping. This can be done to either "zoom in" on a section of the photo (create a new photo of just a portion of the original photo) or to change the aspect ratio of the photo. Cropping involves selecting a portion of the image and removing the rest. This creates a new smaller image with just the portion of the image that you want. Cropping can be used to remove annoyances in the photo, to "zoom-in" on a selected portion of the photo, or to change the aspect ratio of the photo so that it can be printed full frame on a selected paper size. Most good photo programs have a cropping tool.
Experimenting with colors can be a great way to create a whole new picture from something plain. There are so many ways to edit colors, and playing around with them can help you discover different techniques. You can make a photograph look aged with sepia, or you can change a color photograph to black and white. Just about all photo-editing programs have color-balance options. All you have to do is experiment with them to find results you like.
Unsharp masking is an image manipulation technique now familiar to many users of digital image processing software, but it seems to have been first used in Germany in the 1930s as a way of increasing the acutance, or apparent sharpness, of photographic images. The "unsharp" of the name derives from the fact that the technique uses a blurred, or "unsharp", positive to create a "mask" of the original image. The unsharped mask is then combined with the negative, creating the illusion that the resulting image is sharper than the original. Digital unsharp masking is a flexible and powerful way to increase sharpness, especially in scanned images. However, it is easy to create unwanted and conspicuous edge effects. On the other hand these effects can be used creatively, especially if one channel of images in RGB or Lab colour space is selected for unsharp masking.
When you email pictures to friends, you will notice it usually takes a very long time to attach the files. This is because the size of the picture is probably too large to process well. In order to reduce the size of the file, you must reduce the size of the picture. Your editing program will most likely have an option that allows you to change the dimensions of the images, which will change the size. Usually you would use this option to make images smaller, not larger, as the quality would be greatly reduced.
Remember to save your work in the appropriate image format. Use the large TIFF image format if you want to retain all details for subsequent image editing. On the other hand, you can use the JPEG image format if you want to just send the picture via email or upload them to your website. With the explosion of scanners, digital cameras and the World Wide Web, the JPEG image format has quickly become the most widely used digital image format. Many people believe a JPEG image will lose quality every time it is opened or saved. This is simply not true. Saving a JPEG repeatedly during the same editing session (without ever closing the image) will not accumulate a loss in quality. Copying and renaming a JPEG will not introduce any loss, but some image editors do recompress JPEGs when the Save As command is used. To avoid more loss you should duplicate and rename JPEGs in a file manager rather than using "Save As JPEG" in an editing program. However, if a JPEG image is opened, edited, and saved again it results in additional image degradation.
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