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.
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.
Cropping is a good tool to use when you have a picture that has too much going on, or perhaps too little. In the former, you would want to cut the image down to just the subject of your picture, essentially eliminating all the distracting surrounding objects. In the latter, you would do the same thing, in order for your subject not to look too solitary. Once you begin cropping, you'll find there are many different creative ways to crop your pictures; every picture is different, and you'll find different ways to improve your pictures with cropping.
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.
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.
What's the "right" size for a picture? Well, that depends on the photo. Most monitors display at 72 dpi (dots per inch). So, if you want the picture to be 5 inches wide (probably about the biggest you would want for an e-mail message), the picture would be 360 pixels wide (5 inches x 72 dpi = 360 pixels). Pixel is short for "Picture Element" and is the smallest unit of visual information used to build an image. If you have ever zoomed in on an image, Pixels are those little squares that you see. The more pixels in an image, the better the resolution.
Saving your pictures in the appropriate format is very important to ensure the best quality. If you are planning to continue to work with a certain picture, save it as a TIFF image, as it will retain all the detail of the picture. However, if you want a compressed image and you are done working with it, you can save it as a JPEG. Although a JPEG is a lossy file format, it does not lose enough data to be noticeably visible, and it is a good compressing format. This means it will make the size of the file smaller. As long as you don't keep opening, editing, and saving a JPEG image, you won't get too much degradation of the photo.
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