Elevation

The vertical angular distance between a celestial body (sun, moon, ...) and the observer's local horizon. For visible objects it is an angle between 0 degrees to 90 degrees. For example, the elevation of the sun is the angle between the direction of the geometric center of the sun's apparent disk and the observer's (idealized) horizon. We say sun is at elevation 12º when it is situated at 12º above our ideal horizon. Learn more on Wikipedia.

Exposure

The amount of light allowed to fall on each area unit of a photographic medium (photographic film or image sensor) during the process of taking a photograph. Learn more on Wikipedia.

Exposure Value (EV)

A number representing equivalent shutter speeds and lens apertures combinations for the same exposure, given a scene brightness. At ISO 100, 0 represents (f/1.0 at 1 sec); 1 = (f/1.4 at 1 sec) or (f/1.0 at 1/2 sec); 2 = (f/2.0 at 1 sec) or (f/1.4 at 1/2 sec) or (f/1.0 at 1/4 sec) and so on. Learn more on Wikipedia.

EV100

Exposure value at ISO 100.

Event Duration (Time lapse)

Total time of the event for which you want to create a time lapse video.