2015Operating forum
Preventing vibration of Alexa cameras mounted on cinema sleds
What the thread found
- Vibration issues with Alexa cameras on sleds typically stem from loose components, flexible mounting plates, structural flex in the sled or its parts, or vibrating accessories.
- Mounting the camera at both front and rear of the camera body prevents vibration better than front-only mounting.
- The camera body acts as a lever that can bend the dovetail plate if not properly braced at the rear, causing vibrations.
- A rear brace or support point at the back of the camera significantly reduces flex-induced vibration.
- A simple and inexpensive solution involves using a threaded washer or thin nut at the rear mounting point to secure the camera to the dovetail.
- Rear bracing hardware can be fabricated using a screw with an appropriate head size and a thin nut filed to fit the camera's rear recess.
Depends on
- The discussion references specific mounting plates and brackets but does not explain which designs are superior for particular sled types.
- The suggested rear bracing hack requires metal filing and custom fabrication, so results depend on execution skill.
- No quantitative measurements of vibration reduction are provided.
Parts
Same gear or parts
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