A Simple Guide to Digital Cameras, Scanning and Using Images by Oliver Pavie

By Oliver Pavie

An easy consultant to electronic cameras, scanning and pictures. no matter if you must take basic images and email them in your buddies or increase your records with electronic photos, there's lots of software program and to be had that can assist you do it. yet that is the easiest? and the way do you employ it? so that it will create very good pictures with the aid of a digicam and your notebook then glance no additional than "A easy consultant to electronic cameras, scanning and utilizing images." full of crucial details, counsel and methods, this complete and obviously offered guide is precisely what you want to grasp electronic imaging. changing into a professional hasn't ever been easier!

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8a–c Here’s the 300 dpi leaf again (a). The computer can throw away pixels, bringing the resolution down to 150 dpi (b). It can then add pixels to bring the resolution back to 300 dpi (c), but it can’t recreate the fine detail. 31 32 Digital cameras, scanning and using images Megapixels The problem with expressing resolution in the traditional way (as the number of dots per inch) is that you have to know two things: ■ ■ the number of pixels in your file the size of the image when it’s printed. If you’re manufacturing a digital camera, you know how many pixels it will capture, because this depends on the sensor inside it.

Ask your supplier for advice. As your image collection grows, the files may take over your hard disk. 10). These devices are also useful when you want to send images to other people. Putting a disk in the mail can be more practical than emailing a large image or a large collection of smaller ones. Programs for editing digital photographs vary enormously in both price and power. 11). Others offer more powerful tools, but expect you to work out how to use them by yourself. They focus on photo editing, leaving you to dream up your own projects.

Each square inch contains 40 000 pixels that are still pretty small. 6 This image is 600 pixels wide, and 450 tall. 29 30 Digital cameras, scanning and using images ■ ■ ’Image size’ can mean three things: the size of the image file, in kilobytes (usually referred to as the ‘file size’); the size of the image, in pixels (sometimes referred to as the ‘pixel dimensions’ of the image). This is the normal measurement on the web; and the size of the printed image, in centimetres or inches. If someone tells you your images are ‘too big’, find out exactly what they mean before you start editing.

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