Nikon 9235 Reference Manual - Page 58

Pixel Data Size, Bit Depth, Color, and File Size, Firmware, Scanner Extras

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Scanner Extras The options available in the Scanner Extras palette depend on the device selected in the active scan window, the scanner firmware version, and the film adapter in use. This section lists the options available for the scanners and adapters supported under Nikon Scan 3. Bit Depth, Color, and File Size Scanning at a bit depth of eight bits yields 256 shades per pixel for each color in the image (if the image is three-color RGB, the result is 24-bit color, capable of expressing roughly 16.7 million colors). Scanning at a bit depth of twelve bits (COOLSCAN IV ED and LS-2000 only) yields 4,096 shades per color, while scanning at a bit depth of fourteen bits per pixel (4000 ED only) generates 16,348 shades per color. RGB and grayscale images scanned at twelve and fourteen bits are converted to sixteen bits before being opened in the host application, effectively doubling file size. CMYK images are converted to eight bits, but the extra channel produces images one third larger than RGB images scanned at a depth of eight bits. Firmware Pixel Data Size The Scan Bit Depth menu controls the amount of color information in each pixel scanned. "Firmware" is software built into a hardware device. In the case of Nikon film scanners, firmware upgrades may be available on the web or from your nearest Nikon-authorized service center. For details, contact your Nikon representative or see the following URLs: North and South America: http://www.nikontechusa.com Europe: http://www.nikon-euro.com The latest firmware for the LS-2000 and COOLSCAN III is also available on the Nikon Scan 3 CD. Reference:The Tool Chest 57

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57
Reference:The Tool Chest
Scanner Extras
The options available in the Scanner Extras palette depend on
the device selected in the active scan window, the scanner firm-
ware version, and the film adapter in use.
This section lists the
options available for the scanners and adapters supported un-
der Nikon Scan 3.
Pixel Data Size
The
Scan Bit Depth
menu controls the amount of color in-
formation in each pixel scanned.
Bit Depth, Color, and File Size
Scanning at a bit depth of eight bits yields 256 shades per pixel
for each color in the image (if the image is three-color RGB, the
result is 24-bit color, capable of expressing roughly 16.7 million
colors).
Scanning at a bit depth of twelve bits (COOLSCAN IV ED
and LS-2000 only) yields 4,096 shades per color, while scanning
at a bit depth of fourteen bits per pixel (4000 ED only) gener-
ates 16,348 shades per color.
RGB and grayscale images scanned
at twelve and fourteen bits are converted to sixteen bits before
being opened in the host application, effectively doubling file
size.
CMYK images are converted to eight bits, but the extra
channel produces images one third larger than RGB images
scanned at a depth of eight bits.
Firmware
“Firmware” is software built into a hardware device.
In the case
of Nikon film scanners, firmware upgrades may be available on
the web or from your nearest Nikon-authorized service center.
For details, contact your Nikon representative or see the fol-
lowing URLs:
North and South America:
Europe:
The latest firmware for the LS-2000 and COOLSCAN III is also
available on the Nikon Scan 3 CD.