SUNScholar/Digitisation/Guidelines for scanners

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Back to Digitisation
Media type Resolution Bit depth Enhancements Allowed
Printed text 300 dpi Bitonal Sharpening, descreening, cropping, deskewing, despeckling
Rare/ damaged printed text 400 dpi 8-gray or 24 colour Contrast stretching; Minimal adjustments for tone and colour
Book illustrations 400 - 600 dpi with enhancement 8-gray or 24 colour; Bitonal Contrast stretching; Minimal adjustments for tone and colour; Descreen/ rescreen, sharpen
Manuscripts 300 - 500 dpi with enhancement 8-gray or 24 colour Contrast stretching; Minimal adjustments for tone and colour
Maps and other oversized items 300 - 400 dpi 8-gray or 24 colour Contrast stretching; Minimal adjustments for tone and colour
Graphic Art 400 - 600 dpi 8-bit/ channel internal reduction Contrast stretching; Minimal adjustments for tone and colour
Please note
  • All archival material to be digitised in tiff format
  • Tiff copy together with derivated png or any additional copies to be submitted to SUNScholar
  • Document provenance metadata:
    • dc.description.provenance e.g. Original scanned in at 600 dpi, 100% DigiBook 10000 RGB colour, downsized to 840 pixels in width, resolution 250. Web version done automatically by PhotoShop 7 software. Downloading time approx. 26 seconds. Date done March - April 2007.