Light and Space vs Op Art
ライト・アンド・スペース / オプ・アート
Both sit in Geometric Abstraction, so the question is not what they belong to but how they behave. Both are read here as style. They are reached for with some of the same intent, which is where they get confused.
Light and Space
The Southern California movement that takes light itself, spatial perception and the limits of vision as material. Turrell's openings to the sky and Irwin's scrims make the act of seeing the artwork.
Op Art
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Raises perceptual vibration and depth inside a still image through repeated line, form and value.
| Light and Space | Op Art | |
|---|---|---|
| Era | 1960s– | 1960s– |
| Family | Geometric Abstraction | Geometric Abstraction |
| Kind | Style | Style |
| Cues | Objects erased / Rooms filled with light / Thresholds of perception / Apertures to the sky | High contrast / Repeated lines / Optical illusion / Geometric distortion |
| Best used for | Designing a room itself as the experience, with no object placed in it · Making light that changes over time the central attraction of a building | Key visuals that stop the eye hard · Implying sound and motion in a still |
| Type | Finish all wording outside the room and leave no text or marker inside | Keep a neutral sans away from the illusion zone |
| Composition | Erase corners and edges so no break between surfaces can be found | Deform one repetition rule gradually |
| Material | Scrims, resin and built up coatings, with the source itself hidden | Black and white plus exactly one color |
| Caution | Turning the light up to make it noticeable destroys an effect that depends on perceptual thresholds, leaving nothing but a glowing interior. | Never let the vibration reach the reading zone. Lower area and contrast on long-viewed screens. |