ISO 1222

Trépied photographique : Un trépied photographique est un support transportable à trois pieds conçu pour un appareil de prise de vue photographique.
Les trépieds utilisés en photographie diffèrent peu de ceux destinés au cinéma, et à l’audiovisuel.
On utilise un trépied soit pour assurer le cadrage soigné d’une photographie, soit parce que le temps de pose est trop long pour obtenir une image sans effet de « bougé ». On peut aussi utiliser un trépied en photographie pour faire du time-lapse (image par image) ou photographier de nuit sans flash en utilisant de longs temps de pose, ou bien pour figurer sur une photo grâce au déclenchement retardé. En audiovisuel, on utilise un trépied pour assurer la stabilité du cadre. Trépied photographique sur Wikipédia (fr) – Tripod (photography) : In photography, a tripod is a portable device used to support, stabilize and elevate a camera, a flash unit, or other videographic or observational/measuring equipment. Photographic tripods have three legs and a mounting head to couple with a camera. The mounting head usually includes a thumbscrew that mates to a female-threaded receptacle on the camera, as well as a mechanism to allow rotating and tilting the camera when it is mounted on the tripod. Tripod legs are usually made to telescope, in order to save space when not in use. Tripods are usually made from aluminum, carbon fiber, steel, wood or plastic.

Tripods are used for both still and motion photography to prevent camera movement. They are necessary when slow-speed exposures are being made, or when lenses of extreme focal length are used, as any camera movement while the shutter is open will produce a blurred image. They reduce camera shake, and thus are instrumental in achieving maximum sharpness. A tripod is also helpful in achieving precise framing of the image, or when more than one image is being made of the same scene, for example when bracketing the exposure. The use of a tripod may also allow for a more thoughtful approach to photography. For all of these reasons, a tripod of some sort is often necessary for professional photography. Tripods are also used as an alternative to C-Stands as photographic accessories. Tripod (photography) sur Wikipédia (en)