Steve Hannath of Scanners4CAD (and SoftCover) has found that Contex may be misleading customers on the resolution of their scanners.
In a nutshell, the scanners have an optical resolution of 508dpi [dots per inch], but Contex lists them as having 600dpi "resolution" -- note that the word optical is missing.
Among other scanner companies:
* Oce reports 508dpi optical resolution.
* Vidar reports 600dpi "real" resolution based on 508dpi optical.
* GTCO Calcomp rebrands Contex scanners, reporting "Resolution 600 dpi."
* HP reports 508dpi optical resolution.
* IDEAL uses Contex scanners, reporting "1200 dpi."
You can read the whole expose at WATCHDOG: Contex "Optical Resolution" - Fact or Fiction?
This reminds me of hard drive mfg'ers redefining 1MB as 1000KB, and 1GB and 1000MB -- thus overrepresenting the capacity of their hard drives by about 5%. On at "500GB" drive, that's 24GB missing.
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