Re: Feedback requested on the Plustek OpticBook 3600 -- alternatives?
- From: Jon Noring <jon@[redacted]>
- Subject: Re: Feedback requested on the Plustek OpticBook 3600 -- alternatives?
- Date: Mon, 15 Jan 2007 21:45:40 -0700
Doug Cooper wrote:
> Images are consistently sheared (not rotated) about
> 0.35 degrees, which I correct in post-processing. Plustek
> says this is within their tolerances, and it iseems to be a
> universal problem for low-cost scanners.
Interesting. So what that means is that the "track" is 0.35 degrees
off from an exact right angle with the scanning bar?
This suggests that if one scans a calibration chart, one may be able
to determine the shear and apply a "de-shearing" correction in
post-processing.
> The scan head periodically loses its top-of-page alignment
> (creating a small black bar at the page top). There is also
> an occasional one-pixel dropout (which, like the black bar,
> eventually fixes itself).
Interesting.
> Deep enough, especially after I hacksawed off the front
> part (nearest the gutter) of the plastic frame so that I could
> push the gutter right into the glass. This could have been
> better designed.
<laugh/>
> This having been said, it's still head and shoulders above
> everything else I've seen in both price and performance.
Wow, thanks for the comprehensive review!
Jon Noring