Canon false Description

The printer's description indicates that the scanner is a 4800x2400DPI.
In practice, it is impossible to scan with above 600DPI resolution, whatever the size of the document to print ...
It's simple, my previous printer (an MP640) was better.
It seems that this is a limitation of the software, not hardware.

I said that this problem is not the fact of the seller, but the manufacturer.

For information, the use of a third driver allows to operate the scanner 2400dpi, evidence that the software flange scanner.
(Test conducted by me with patterns: This is not a interpolation from the software).
The problem is that these third party drivers are paying ...