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By DanBrown
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One problem people face when starting out with digital photography is how to touch up raw digital images. Perhaps an image is slightly dark, perhaps it has to be rotated or cropped. Maybe some dirty spots have to be cleaned out and erased. Digital photos usually require some form of manipulation before final output, unless, of course one takes a perfect picture. The first step is to find an image editor. For beginners, a program that has easy, simple tools will do just fine. More advanced people can move on to more complicated programs.

There are many pictures that you've probably taken that would've looked great... except for the red-eye. Just about every graphics program has a red-eye removal, so that no matter what level your program is you'll be able to remove the red-eye. However, in order to prevent it in the first place, it helps to know what causes it. Red-eye is caused by the flash reflecting to the back of the eyes all the way to the retina, and the red comes from the blood vessels in the eye. Therefore, if you flash a light in the eyes of your subject, this will cause the pupil to contract, and then there won't be any red-eye.

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.

If you have a rather plain photograph, or a black and white picture, there are ways to manipulate the colors to make the picture more interesting. Your editing program will probably have a way to enhance the color of a picture, or you can completely change the color of an object. If you learn to use the tools well, you could be able to convert a black and white picture to color. You can also create aged effects, or make a picture grayscaled. Experiment with your program and find out what you can do to improve the coloring of your pictures.

Most of us upload our pictures or print them the way they were captured by our digital cameras. We read and hear of a post-processing technique called "Sharpening" using "USM" (or "UnSharp Mask") and decide it is just too difficult for us. Most cameras -- especially in the "pro" category -- will capture an image without applying any sharpening to it, resulting in an image that appears "soft" or even slightly "out of focus." Others will apply a certain degree of sharpening to the images and output crisp looking images. Most beginners prefer the latter type, while most advanced photographers prefer the former. When a camera processes your images, it is in effect deciding the amount of sharpening to give your images without your input. Some cameras do a good job at it, others do too much of it. If your camera produces "soft" images (because it does not sharpen for you), then you are in fact in luck. Using an image editing software such as Photoshop Elements, you can apply sharpening yourself to selected pictures for maximum impact, either for screen display or for printing.

Depending on your needs, you may want to resize your photo. If you're emailing a picture to a friend, you'll want to resize the picture down to a much smaller size. If you're printing the photo on a greeting card, you can scale down the image to the size of a 4x6 print. Most pictures need a little work to get them just right. You can turn an average picture into a great one with a minor fix: resizing the picture. With a digital photo-editing program, you can complete this task easily and quickly.

Final compression and using the right format can be as important as taking good photos and scanning them correctly. Macs and pc's - and other types of machines - are readily mixed in today's computer environments. This means that proprietary file formats are no longer useful, because you want to be able to exchange files with other people using other types of computers. Web formats are excellent exchange formats, but unfortunately not well suited for archival purposes. This list covers the most common file formats and comments on their characteristics. BMP is the format that is the native Windows format, but it has no advantages over TIFF apart from support in Windows Paint. It is accurate but compresses poorly and has nothing close to the flexibility of TIFF. Use TIFF for archiving in stead. Useless on the web. TIFF is the best format for storing originals and transporting files. TIFF is accurate and compresses well without loss of quality. TIFF can store all types of pictures - simple and complex, B/W and color, photos and logos. TIFF is platform independent and works on both Mac's and PC's.

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