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2006Sled forum

Lens vibration issues with Steadicam sled and Sony camera

20 years old. Gear and prices may have changed since.

What the thread found

  • Lens vibration on longer focal lengths can originate from resonance in the center post, particularly with telescoping posts that are problematic compared to fixed carbon fiber alternatives.
  • Battery placement on the post can induce harmonic vibrations that transmit to the image, requiring careful positioning to avoid specific resonance frequencies.
  • Cushioning in the operator's shoe is a significant factor in vibration reduction, as all vibration begins at the foot and travels through the body into the sled.
  • The camera plate used significantly affects vibration transmission, with some plates introducing more movement than others depending on the specific model.
  • Pressure screws on gimbal components should apply even pressure to pressure plates to keep the camera stable without making adjustment too difficult.
  • Post length should be kept as short as possible to minimize vibration issues.
  • A longer camera body with high center of gravity requires secure fastening to prevent vibration.
  • Raising the rear pin on certain camera plate models can reduce vibration.

Depends on

  • Discussion involves a specific camera model from 2006 with particular mounting characteristics.
  • Solutions described are tailored to the Pro II sled and XCS gimbal configuration.
  • Vibration issues appear frequency-dependent and context-specific to individual rig setups.
  • The relationship between battery placement and induced harmonics was not quantified.
  • Camera plate effectiveness varies between models, and specific plate recommendations may not apply to all setups.

Parts

Donkey Box

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