View source for Nikon film scan (Slides of microscopic specimens)

== Scanner hardware ==
=== Nikon Super Coolscan 5000 ED (film scanner)  ===
==== Specifications ====
* Scanning system: Fixed film, movable plane single-pass optical scanning system
* Light source: R, G, B and Infrared (IR) LEDs
* Image sensor: 3,964-pixel, two-line linear CCD image sensor
* Color separation: Performed by RGB LEDs
* Optical resolution: Up to 4,000 pixels per inch
* A/D conversion: 16 bits per color
* Density range: 4.8
* Output: Full color or greyscale at 8 or 16 bits per channel
* Focus: Auto and manual; autofocusing point selectable
==== Processable media ====
Negatives and positives, in color and monochrome
* 35mm slides
** Slides with mounts 1.0 - 3.2mm thick, 49 - 50.8mm wide; optional SLIDE FEEDER SF-210 can be used to scan up to 50 slides with mounts 1.5mm thick
* 35mm film strips
** 2 - 6 frames (2 - 40 frames with optional ROLL FILM ADAPTER SA-30); strips of 1 - 6 frames can be scanned with optional STRIP FILM HOLDER FH-3
* APS (IX240) film
** Slides with mounts 1.0 - 3.2mm thick can be scanned with optional 120/220 MOUNTED FILM HOLDER FH-869M
* Preparates (slide glass for microscope)
** Prepared slides (26 x 76mm, 0.8 - 1.5 mm thick) can be scanned with optional MEDICAL SLIDE HOLDER FH-G1

==== Additional equipment ====
* Slide feeder SF-210
* Strip film holder FH-3
* Medical slide holder FH-G1

== Digitizing server infrastructure ==
=== Digitization workstation - computer hardware and software ===
* Intel Core i3-2310M 2.10 GHz
* 3.1 GB RAM
* 500 GB hard disk
* 1428 MB Graphic Card
* MS Windows 7
* Adobe Photoshop CS4
* MySQL database + phpMyAdmin
* Silverfast AI + HDRStudio

=== Storage server and backup ===
* CIFS share on DualHead NAS (on EMC Celerra NS120 80TB) 
* Backup via NDM protocol to LTO5 tape library (Dell ML6000)

=== Image server (publishing the tif files for the WWW) ===
* shared resource BGBM see [[Digitalisierung_am_BGBM#Image_server_.28publishing_the_tif_files_for_the_WWW|Image server (publishing the tif files for the WWW)]]

== Digitizing workflow ==
* Specimen data inserted/extended in MySQL database 
* Dia slides are scanned via Nikon Coolscan 5000 and Silverfast
* Image saved as an uncompressed tiff file with ~ 100 MB, internal accession numbers as filename
* Adjusting contrast and brightness, further processing e.g. dust and scratch removal if required
* Image saved as a compressed tiff file with ~ 50 MB for web publishing, internal accession numbers as filename

--[[User:Carola Söhngen|Carola Söhngen]] 08:22, 20 June 2012 (CEST)