Glossary

Welcome to the glossary of technical terms. Browse through the alphabetic list to find the term(s) you’re looking for.

E

Effective ISO:

Analogous to film speed. A higher number means the camera sensor needs less light to make a good exposure. Higher numbers can help in situations of low light where flash may not be effective, e.g., large interiors in low light.

Elevation:

In digital imaging software, this term refers to the height of an imaginary light source over an image. The elevation of the light works in conjunction with azimuth to generate a three-dimensional emboss effect.

EMF:

The 32-bit version of the Windows Metafile (WMF) format.

Encoder:

An algorithm that converts raw data to an encoded form, usually to physically compress the data. .

Entropy Encoder:

An encoder capable of lossless encoding.

EPS (Encapsulated PostScript):

A graphic file format developed by Aldus, Adobe, and Altsys to allow exchange of PostScript graphic files (image information) between application programs. .

Ethernet:

An inexpensive, widely used local area network developed by Xerox, DEC and Intel Corp. for data transmission between interconnected computers. Ideally, it transmits data at 10 million bits per second (about a megabyte per second). Ethernet can be used with nearly every type of computer on the market today. .

EXIF (Exchangeable Image File):

A standard for storing information, primarily with images that use JPEG compression. Most digital cameras create EXIF information. EXIF information is embedded in the image file.

Export:

To move data from one application to another. The data is placed in a format that the other application understands.