| Use | Resolution | Bit Depth | Color Space | Dimen- sions |
Editing/ Processing |
File Format/ Compression | Storage | |
|---|---|---|---|---|---|---|---|---|
Archival |
Long-term archive |
300+ ppi |
24-bit |
RGB |
Varies by size of original (no less than 6000 pixels on LS) |
Check grayscale and color accuracy |
TIFF, with little endian (IBM PC) Byte Order; no compression; save with embedded ICC Color Profile |
Stored on 2 media: CD, DVD, tape, spinning disk |
Working |
To create derivatives. Publ cation printing. |
sRBG |
-Change file format2 -Tone & color adjusted -(Converted to grayscale if b&w) -Sharpened |
Same as AM, but may be compressed with LZW compression if saving storage space is essential.3 |
If kept, same as AM. |
|||
| Dynamic Delivery File | Internet delivery |
300 ppi. |
24-bit |
varies |
None |
JPEG2000 |
CONTENTdm server |
[1] - ppi is dependent on map size. If the map is scanned in sections and stitched together, the resulting file ma be too large for your photo editing software to manage. In this case the sections will have to be downsampled to a more management ppi size.
[2] - If you are using Photoshop to edit the Working Master, change the file's TIFF format to PSD, Photoshop's native file format, which allows for more editing functionality.
[3] - To provide zoom and pan functionality for an imago, you can upload the Working Master (TIFF) file to a "full resolution" CONTENTdm collection. CONTENTdm will then convert the TIFF format to a JPEG2000 format.