Teleconverter

A secondary lens which is mounted between the camera and a photographic lens. Its job is to enlarge the central part of an image obtained by the objective lens. Learn more on Wikipedia.

Total Memory Usage (Time lapse)

It helps you estimate the size or number of memory cards you will need to save all the photos of your time-lapse video.

Time lapse

Technique whereby the frequency at which film frames are captured (the frame rate) is much lower than that used to view the sequence. When played at normal speed, time appears to be moving faster and thus lapsing. For example, an image of a scene may be captured once every second, then played back at 30 frames per second. The result is an apparent 30-times speed increase. Learn more on Wikipedia.