Digitalisierung ZSM

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Version vom 30. Dezember 2014, 11:40 Uhr von Dagmar Triebel (Diskussion | Beiträge)

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Digitalisierungsstation  © Zoologische Staatssammlung München
Digitalisierungsstation  © Zoologische Staatssammlung München

1. Photography hardware

1.1: Digital Camera Pentax K-5 with effective resolution: 16,28 million Pixel

1.2: Lenses

1.2.1: Pentax DA L 18-55 mm f /3.5-5.6 AL for middle-sized objects (10–150 cm)
1.2.2: Pentax smc DA 35 mm f /2.8 Macro Limited Edition 1:1 for small objects (1-10 cm)

1.3: Additional Accessories:

1.3.1: Remote Control Waterproof O-RC1
1.3.2: AC adapter kit K-AC50
1.3.3: HDMI-Cable for live view and play back of images via the mini HDMI terminal on the Pentax K-5
1.3.4: HP ZR2240w monitor to use the output option of the camera on a HDMI-compatible AV device

2. Camera copy stand

2.1: Re-used & converted Leica REPROVIT IIa

3. Lighting

3.1: 4 Helios Biglamp 501 Maxi with diffusor Screens

3.2: 2 additional swan-neck lamps for illumination of macro objects

4. Calibration scales

  • x-rite colorchecker in 2 sizes
  • length scale (2 sizes: 0–2 cm, 0–10 cm)

5. Digitization workstation – computer hardware and software

  • Business Laptop, Windows 7 Pro
  • Intel Core i5-2430M CPU @ 2.40 GHz
  • 8 GB RAM
  • Image memory: 32 GB SanDisc ExtremePro 95MB/s
  • Photoshop
  • DiversityCollection Database

6. Digitalizing workflow

  • alcohol specimens are photographed “dry” or submerged in ethanol in small glass containers mainly in lateral view with scales and colour standard
  • modern labels are either fully or partially (accession number only) depicted
  • images are saved on memory card as jpeg files with ~5 MB, using an object code as a file name
  • Data transfer to stationary computer
  • Selection of best photos and saving in original format
  • File names are renamed according to respective specimen accession numbers
  • file-transfer to DWB and archiving using external hard disc
  • Specimen data inserted via DiversityCollection Client to DC-database
  • Specimen imaging with one picture takes between 2 and 5 minutes. The whole procedure including data transfer, renaming and local archiving takes roughly 10 minutes.

This page gives the status in 2014