native format The proprietary file format used by a photo editing program (and other types of programs). For example, the PSD format in Adobe Photoshop Elements and Adobe Photoshop is a native format.

Popularity: 11% [?]

aperture An adjustable iris in a camera lens that controls how much light passes through the lens to the image sensor. Aperture sizes are stated in f-stop numbers and written as f/2.8, f/4, and so on. A smaller f-stop number indicates a larger opening and greater light transmission, for a brighter exposure. Aperture also affects depth of field (focus zone); the larger the aperture, the shorter the depth of field.

Popularity: 9% [?]

The image sensors on most digital cameras have a light sensitivity equivalent to ISO 100 film, which means that they respond best to brightly lit scenes. In an attempt to give photographers a better chance of recording a good image in dim lighting, newer cameras offer an ISO control that adjusts the camera’s light sensitivity.

Popularity: 10% [?]