2011Forum Steadi-Newbies
Équilibrage et réglage d'une caméra GH1 sur un Merlin gimbal pour un fonctionnement stable
Il y a 15 ans. Le matériel et les prix ont peut-être changé depuis.
Ce que le fil a révélé
- Un GH1 avec une lentille de crêpe de 14 mm pèse environ 480-500 grammes, ce qui est assez léger pour provoquer un balancement et une instabilité sur le gimbal.
- L'utilisation de lentilles plus lourdes (800-1000 grammes de poids combiné) donne des résultats plus satisfaisants car une masse accrue améliore la stabilité.
- L'ajout de masse au gimbal augmente l'inertie rotationnelle, ce qui améliore les performances de stabilisation.
- A hotshoe microphone positioned at distance from the gimbal can provide meaningful additional stabilization due to its mass placement away from the pivot point.
- Camera support rails can add mass and help lift the camera, increasing rotational inertia for better performance.
- Adding a plate to lift the camera and spread mass distribution can improve stability and facilitate transitions to stick or handheld operation.
- Rotational inertia depends on the square of the mass times the distance from the gimbal, so placing weight further away has a significant effect.
- The compact camera body results in lower rotational inertia compared to longer video camera designs.
Dépend de
- Advice based on experience with GH1 camera and Merlin gimbal from 2011.
- The original poster was still learning gimbal operation, so some instability may have been due to handling technique rather than setup alone.
- No specific weight recommendations provided for accessories to add.
- Discussion includes theoretical physics explanations that were not fully verified by testing in the thread.