Scanning Specifications

by Jeremy M. Brown — last modified 2017-08-23T10:11:34-04:00

These scanning specifications should be used for the majority of the items that are scanned for a MU Institutional Repository project.

Manuscripts/Documents

  • File Format: PDF
  • Resolution: 300 dpi
  • Pieces of paper 8 ½ X 11 and larger are scanned at 400 dpi
  • Pieces of paper smaller than 5 x 7 are scanned at 600 dpi
  • 24-bit color

 

Photographs

 

  • Slides and Negatives
      • File Format: JPEG2000, TIFF, JPEG
      • Pixel array:  5000-6000 pixels on the long side
      • Resolution: 1200 dpi
      • 24-bit color (8-bit grayscale if black and white)
  • Prints
      • Image File Format: JPEG2000, TIFF, JPEG
      • Resolution: 300 dpi
      • 24-bit color (8-bit grayscale if black and white)


For photographic prints, size measurements for determining appropriate resolution are based on the size of the image area only, excluding any borders, frames or mounts. However, in order to show that the entire record has been captured, it is good practice to capture the border area in the master scan file. In cases where a small image is mounted on a large board (particularly where large files size may be an issue) it may be desirable to scan the image area only at the appropriate resolution for its size, and then scan the entire mount at a resolution that achieves 4000 pixels across the long dimension.

 

 

Graphic Illustrations/Artwork


If item is paper based then the following format is used:

  • File Format: JPEG2000, TIFF, JPEG
  • Resolution: 600 dpi
  • 24-bit color (8-bit grayscale if black and white)


If the item is a 3D object, such as a painting or a sculpture

  • Photograph the item from various sides of the object, when possible, and photograph close up for significant details on the object that add to it’s value.:
  • File Format: JPEG2000, TIFF, JPEG
  • Resolution: 600 dpi
  • 24-bit color (8-bit grayscale if black and white)

 

Audio Files

  • File Format:MP3, AAC, AIFF
  • Compression: high quality
  • Bit Rate: 16-bit
  • Sample Rate: 44.1 kHz
  • Recording level: best possible without distortion

 

Video Files

  • File Format: MPEG4
  • Compression: high quality
  • Audio recording level: best possible without distortion