Computer Mentor - For a Healthy Computer

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.

Redeye can ruin an otherwise perfectly good portrait, but there are ways to remove it. Unfortunately some of these methods can remove detail in the eyes and make them look very unusual, even lifeless.The cause of red eye is the flash reflecting from the back of the eye and into the lens. The best thing is to avoid the flash to reflect from the eyes from the very beginning. Red-eye reduction works by having the flash shine a light into the eyes of the subject just prior to the flash/shutter event. This serves to cause the irises in the subject’s eyes to narrow down. The result of this is a smaller opening into the eye for a camera’s eye view of the blood filled retina. Obviously, this would work only if the subject is actually looking at the flash for the pre-light.

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.

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.

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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