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| | Scanning
Sample Library photo (1"=500'/1:6000) at various
scan resolutions:
- Scan@ 150 dpi
- dot or pixel size =
- 170 microns*
-
- File size-
- 1.6MB (tiff)
- 300kb (jpg 5)
- 4 minutes to download**
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- Scan@ 300 dpi
- dot or pixel size =
- 85 microns*
-
- File size-
- 6.5MB (tiff)
- 795kb (jpg 5)
- 8 minutes to download**
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- Scan@ 500 dpi
- dot or pixel size =
- 51 microns*
-
- File size-
- 18.2MB (tiff)
- 1.6MB (jpg 5)
- 15 minutes to download**
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- Scan@ 800 dpi
- dot or pixel size =
- 32 microns*
-
- File size-
- 47MB (tiff)
- 3.2MB (jpg 5)
- 25 minutes to download**
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- Scan@ 1814 dpi
- dot or pixel size =
- 14 microns***
-
- File size-
- 277.7 MB (tiff)
- 40.3MB (jpg 5)
- 352 minutes to download**
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- *IMAGES SCANNED ON SCANMAKER 9600XL™(non-photogrammetric)
Description:
36-bit, single-pass flatbed scanner
Optical resolution: 600 x 1200
Dpi
Maximum contact scan size: 12"x17"
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- **Estimated time for typical file transfer via modem at
28.8. JPEG files can be compressed to decrease file size. In Adobe Photoshop™ - a
"10" is the least amount of image quality loss, but a larger file size.
In
Adobe - "1" is a smaller file size but a greater image quality loss.
***1814.TIF SCANNED AT 14 MICRONS (1814 DPI) BY OUTSIDE SOURCE ON A
PHOTOGRAMMETRIC SCANNER.
***WIDTH 9.294" - HEIGHT 9.294" - 256
GRAY
- To calculate file size:
Megabytes-per-square-inch = (25,400 ÷
scan-resolution-microns)2 ÷ 1,000,000
Multiply the megabytes per square inch
(see above) by the number of square inches being scanned from the contact
print, or a selected portion, to get
the (approximate) total file size. This file size formula is for the tiff
format.
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