Entertainment / Photography / Negative Lens
Negative Lens: Is a simple concave lens that causes rays of light to diverge away from the optical axis.
Negative Vorticity Advection: The advection of lower values of vorticity into an area.
Negative Symptoms: Most commonly refers to a group of symptoms characteristic of schizophrenia that include loss of fluency and spontaneity of verbal expression, impaired ability to focus or sustain attention . . . View Full Definition
Negative Space: The areas of an artwork that are NOT the primary subject or object. Negative Space defines the subject by implication. See Positive Space, Notan, Gestalt
Negative Weight: Weight on a ball that tends to hold back the hook and/or to get the ball into a roll earlier; bottom weight, negative side weight and thumb weight are considered negative weights. These are . . . View Full Definition
Negative Signs: Earth and water signs; an alternate term used to describe 'feminine' characteristics of receptivity and passivity. See also feminine signs.
Negative Working Capital: Occurs when current liabilities exceed current assets, which can lead to bankruptcy.
Petzval Lens: Early lens system developed by joseph petzval. It had a very wide aperture and was relatively free from aberration. Many modern lenses have developed from this simple three-element design.
Portrait Lens: Lenses produced specifically for portraiture. They usually have a long focal length and produce a slightly diffused image.
Normal Lens: A type of focal length that seems to most closely approximate the human eye's range of vision (in actuality the range of vision is narrower in a normal focal length lens, with less illusion . . . View Full Definition