Scanning

How to Scan (HP Scanner)

NB: When scanning an object or photo it is best to leave a 2cm wide gap around the edge, to ensure the whole item will be captured

• Place item on the glass
• Select colour/grayscale as you wish
• Press scan
• Crop image if applicable
• Click 'adjust' and alter the pixels/inch where necessary - In this instance, I altered my images to 300 DPI
• Save the image 

In order to sustain a good quality image in presentations, web or printing, it is necessary to know the ideal resolution for the picture to be. 

For projecting in class: 102 DPI

The web: 72 DPI

Printing in a book/magazine: 300 DPI

Printed on a laserwriter: 200 DPI

(Information from http://www.learn.columbia.edu/mcah2/pdf/training_resolution.pdf)

For instance, here is the same photo of a wallet saved at different resolutions...

100 DPI

300 DPI

Both images at 100 DPI and 300 DPI are better suited to the web than an image of, say, 600 DPI (which was too big to upload).

Here are some more scanned objects and patterns:

It's interesting to note how the scanner does not pick up shiny/metallic surfaces... the apple logo on the back of this phone is invisible!