KODAK PROFESSIONAL: Technical Information Bulletin


Kodak Photo CD Disc: Resolution Information

Contents

Image resolutions

Average file size

Scanner resolution

Do I have to get all possible resolutions on a Photo CD Master Disc? Can I only get Base?

Updated 19 June 2003

Image resolutions

Image resolutions stored on a Kodak Digital Science Photo CD Pro Master Disc

Resolution	Resolution (pixels)	Approximate Uncompressed File Size (MB) in RGB	Suitable for...
Base/16	128 x 192	0.07	Index print of image (thumbnail view*).
Base/4	256 x 384	0.28	Displaying rotated images on television (base image is too large when rotated).
Base	512 x 768	1.13	Television or computer monitor display ("FPO"*).
4 Base	1024 x 1536	4.50	High-definition television display (HDTV).
16 Base	2048 x 3072	18.00	High resolution for 35 mm film original ("Final"); highest resolution on a Photo CD* Master Disc.
64 Base (optional)	4096 x 6144	72.00	Full resolution scans of 35 mm and larger format films (for prepress); available only on a Photo CD Pro Master Disc.
* Desktop publishing terminology

Average file size

What is the average size of an Image Pac file written to a Kodak Digital Science Photo CD Master Disc?
For most 35 mm images, the size is approximately 4.5 megabytes (MB). Depending on the film type and the scene content, the size can range from 3 to 6 MB. The Kodak Professional PCD Imaging Workstation 4220 can reduce the quantization and produce 16 Base files (up to 8 MB).

Scanner resolution

What is the scanner resolution on a Photo CD Disc?
For 16 Base scans, the Kodak Professional PCD Film Scanner 2000 or the Kodak Professional PCD Film Scanner 4045 digitizes 2048 x 3072 pixels over a 35 mm frame of film (24 mm x 36 mm, or 0.94 x 1.42 inches). This produces a scanning resolution of 2200 pixels per inch in both dimensions.

For 64 Base scans, the Kodak Professional PCD Film Scanner 4045 scans varying film formats at 4096 x 6144 pixels, or approximately 4400 pixels per inch.

Do I have to get all possible resolutions on a Photo CD Master Disc? Can I only get Base?

The Image Pac file written to a Photo CD Master Disc contains Base/16 through 16 Base. The Image Pac file written to a Photo CD Pro Master Disc contains these five resolutions and the optional sixth resolution, 64 Base. Because Kodak Digital Science Photo CD Portfolio II Discs are often intended to be viewed only on a television, they may be written with just three levels of resolution: Base and below.

Kodak, Kodak Professional, Digital Science, and Photo CD are trademarks of Eastman Kodak Company.

TIB7058

Technical Information Bulletins provide information of limited or specific application. Responsibility for judging the applicability of the information for a specific use rests with the end user.