2004منتدى Follow Focus
M-One lens drive motor performance with follow focus systems
مضى على هذا 22 سنة. قد تكون المعدات والأسعار قد تغيّرت منذ ذلك الحين.
ما توصّل إليه النقاش
- محرك (إم - يون) مُلتصق ومُوجّه رأسياً، يُلائم الأماكن الضيقة حيث يُكافح محركات أكبر.
- ويولد المحرك قوة قوية لسحب الطاقة والاستجابة السريعة عبر طائفة من أنواع العدسات ومستويات المقاومة.
- ويعمل المحركات بنجاح عدسات صلبة، بما في ذلك النماذج القديمة، مما يمثل صعوبة بالنسبة لنظم الدفع الأخرى.
- ولا تحتاج معدات الاستئجار السريع إلى أدوات ويمكن مسحها فورا.
- ويوضع المقياس مباشرة خلف العتاد لضمان الدقة ولكنه يحول دون تركيب العتاد على جانبي المحرك.
- A five-pin Lemo connector is used, consistent with most analog motors and can be rotated to clear obstructions.
- The motor is significantly heavier than comparable models, approximately 1.5 times the weight of alternative options.
- When vibration and double-mark problems occur during operation, potentiometer failure or power supply inadequacy are possible causes.
- Lens barrel stiffness in cold conditions can exceed the motor's capability, though competing products showed similar limitations under extreme cold.
- The motor package includes all necessary components for immediate setup without additional purchases required.
يعتمد على
- The design prevents gear mounting on both sides of the motor due to potentiometer placement, though the sliding bracket mitigates this limitation.
- Extreme cold weather can prevent the motor from turning very stiff lenses, though this appears to be a limitation of the technology generally rather than a specific weakness.
- Weight considerations may make it unsuitable as a primary choice for applications where lens stiffness is not a concern.
- Heavy anamorphic lenses with front-mounted supports require careful rigging consideration and potential custom machining solutions.
- Potentiometer-related issues have been reported, though causation between mechanical impact and failure was disputed in one instance.
- Service availability and response time depend on manufacturer contact and repair arrangements.
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- 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
- 2025History of wireless focus and lens control systems for Steadicam®: from cable-based Cinema Products and Seitz to Preston digital, and European solutions by Chrosziel, cmotion, and ARRI.FacebookSteadicam operators group
- 2025LC-1 (Lens Control-1) follow focus system: wired structure, motors, and early operational experience (1990s).FacebookThe Steadicam Group