64 Base
From The Glossary of Digital Photography
One of the six sizes used by the Kodak Photo CD system when scanning or digitizing photographs. It has a resolution of 4096 by 6144 pixels. The others are 16 Base, 4 Base, Base/16, Base/4, and Base. See also 16 Base; 4 Base; Base/16; Base/4; Base; Photo CD (PCD)
