Pentax K-7 Operating Manual page 96

EV (Exposure Value)
Exposure value is determined by the combination of the aperture value
and the shutter speed.
EV Compensation
Process of adjusting the image brightness by changing the shutter speed
and/or aperture value.
Exif (Exchangeable image file format for digital still camera)
A standard digital camera file format established by the Japan Electronics
and Information Technology Industries Association (JEITA).
Exif-JPEG format
Exif stands for Exchangeable Image File Format. This image file format is
based on the JPEG image data format, and allows thumbnail images and
image properties to be embedded into the data. Software that does not
support this format processes the image as a regular JPEG image.
Exif-TIFF format
Exif stands for Exchangeable Image File Format. This image file format is
based on the TIFF image data format, and allows thumbnail images and
image properties to be embedded into the data. Software that does not
support this format processes the image as a regular TIFF image.
Focus point
Position in the viewfinder that determines focus. In this camera, select
from Auto, Select and Center.
Histogram
A graph that shows the darkest and brightest points in an image. The
horizontal axis represents the brightness and the vertical axis represents
the number of pixels. This is useful when you wish to refer to the exposure
status of an image.
JPEG
An image compression format. Although the image quality deteriorates a
little, images can be compressed to a smaller file size than with TIFF and
other formats. In this camera, select from "_'**_r (Premium), -k*-k (Best),
-k* (Better), or * (Good). Images recorded in JPEG format are suited for
viewing on your PC or for attaching to e-mail.