Quick, easy but muddy pictures

have gained me the scanner to the actually good reviews.
The positives - of course, the handling is extremely simple, the device plastic, but okay.
However, the most important thing is the image quality and as always, there's unfortunately hitch.
Negative: consistently bluish and slightly too dark and muddy representation (ie no details).
Slides throughout to focus.
For comparison, we had before the Rollei DF-S100, this is unfortunately the opposite extreme (to feinpixelig too bright).
Although you can save a little behind with software programs, but that's too expensive.
Because the picture quality, unfortunately, only 2 stars.