What does resolution actually mean in the world of digital images? Every digital image is made up of tiny pixels like a mosaic. We measure resolution in pixels per inch (PPI), i.e. this value indicates how many pixels there are per inch (approx. 2.54 cm). The higher the density of pixels per inch, the higher the resolution.

But resolution is only one piece of the picture quality puzzle: it’s like a piece in a big game. It only says something about the quantity, but not about the quality, i.e. the sharpness of the individual pixels. 

How much resolution is needed?That depends entirely on the type of original to be digitized: a pure text or a stamp require far less resolution for an excellent scan result than the image of a painting, which is needed for scientific purposes, or the digitization of a poster that is to be printed in large format.

With its high-resolution M70 and M150 cameras, book2net offers the ideal basis for resolutions in all formats.


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PPI stands for "Pixel per Inch". It describes [...]