Incomplete Scanning Guide, Cont.
The Wonders of Modern Scanning Software
Every scanner I have ever seen comes with some type of scanning software that allows the user to perform a limited number of operations on the scan, such as scaling and changing filetype. This new "smart" software will generally produce a good result using the defaults it enacts based on the type of final output you designate.
In saving your scan to the computer, you may need to make a decision as to file format. Use this general rule for determining file types:
Frequently Asked Questions
WHAT IS RESOLUTION?
Resolution is the amount of information an image contains. This information comes together in the form of pixels. Pixels appear as tiny dots, which, when placed closely together create the illusion of continuous colors and shades-the colors and shades which give shape to your image.
WHAT IS SCALING?
Scaling refers to the physical size of your image, in inches or pixels, not to its resolution size. A small image requires less disk space and processing time than a larger image but a high resolution (DPI) scan increases your file size tremendously.
WHAT IS MOIRE?
When you scan in an image at too high a resolution or when you are scanning color, Black and White and grayscale photos with fine patterns, the scanner may create what is known as moiré patterns. Imagine a screen passing in front of another- as the hole align and misalign a changing pattern is evident to the eye . Now imagine the scanner array trying to align perfectly with the dots that make up a magazine type image. Now you see the problem.You can overcome this sometimes with a variety of filters in Photoshop.
WHAT IS DPI, PPI, LPI?
When scanning images you need to keep in mind the resolution of the output device through which your images will be displayed. Different output devices use different methods to display image data and have different limitations on their output resolution. These factors need to be taken into account when you scan images.