2016منتدى Follow Focus
منع انزلاق السيارات على بعد 15 ملم
ما توصّل إليه النقاش
- A motor can slip off a focus rod when the torque causes the rod to bend away from the lens gear, and bridging the motor host rod to another rod with a 15mm bridge clamp prevents this bending and solves the problem
- Mounting the motor so its gear engages the lens at the top, bottom, or side position reduces slippage compared to other angles
- Using a dogbone with independent tightening screws on both ends instead of a single-handle design minimizes slippage
- Wrapping gaff tape around the rod before clamping the motor increases friction and can prevent slippage
- A bongo tie around the motor and opposite rail can stabilize the motor against slippage
- Motor power should not be maximized during operation as it increases the risk of the motor disengaging from the barrel
- Mounting a rod above the lens with the motor hanging down uses gravity to prevent the motor from jumping away
- Ensuring cutouts on 19-15mm adapters align with the motor rod clamp cutouts reduces slippage
- Manual calibration should stop before the lens hard stop rather than at it, as the motor may jump off when hitting the stop
يعتمد على
- The physics of why gear positioning angle reduces slippage is not fully understood by practitioners
- Solutions for slippage depend on rod material, with aluminum and carbon fiber being more prone to bending than steel
- Longer rods increase the likelihood of bending-induced slippage
- The precision of manufactured components varies considerably and affects slippage problems
القطع
المعدات أو القطع نفسها
- 2026اسحب التركيز و اقسم نفسك أثناء العمل خاصة على العروض الحيةOperator practice
- 2026Swapping an ARRI ALEXA 35 between tripod/studio and Steadicam® mounting: baseplate choice and fastest work flow.FacebookSteadicam operators group
- 2025LC-1 (Lens Control-1) follow focus system: wired structure, motors, and early operational experience (1990s).FacebookThe Steadicam Group
- 2024تعديلات على جهاز الكشافة رقم Steadicam لتوسيع نطاق توزيع الطاقة وربطهاGeneral Discussion