ما توصّل إليه النقاش

• وتواجه النظم الرقمية ذات المعايرة الذاتية التي يبلغ عددها follow focus نظاما صعوبة في تتبع حلقات التركيز المستمرة على العدسات دون توقفات صعبة، حيث تميل المحركات إلى تجاوز نقاط المقاومة الصغيرة.
• Lenses with hard stops such as Zeiss ZE, Zeiss CP2 prime lenses, Zeiss LWZ, and older Tokina models provide better compatibility with digital follow focus systems.
• Digital systems featuring lens mapping functionality allow operators to create reference points by taping focus positions against a measure, enabling software interpolation across the focus range.
• An iris slider add-on accessory works with both analog and digital receivers for focus control, but requires a digital receiver specifically for iris control.
• Analog follow focus receivers can be modified with an internal voltage switch to operate lightweight focus motors designed for ENG lenses at reduced power levels.
• The G-Zoom Bartech controller works exclusively with analog follow focus systems and receivers.
• For broadcast TV lenses, a complete wireless focus control setup can be built using an analog receiver, a Stanton focus motor with appropriate gear ring, the Bartech small focus controller attached to a gimbal handle, and appropriate motor mounting brackets.

يعتمد على

• Pricing information provided is from 2012 and may not reflect current costs.
• The Preston HU3 lens mapping approach is mentioned but specific performance details are not discussed.
• Modifications to receiver voltage require service from a technician and pricing varies.
• Experience level and specific shooting scenarios of contributors are unknown.

المعدات في هذا النقاش

HU3, BFD

القطع

Follow Focus

المعدات أو القطع نفسها

1. 2026اسحب التركيز و اقسم نفسك أثناء العمل خاصة على العروض الحيةOperator practice
2. 2026Swapping an ARRI ALEXA 35 between tripod/studio and Steadicam® mounting: baseplate choice and fastest work flow.FacebookSteadicam operators group
3. 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
4. 2025LC-1 (Lens Control-1) follow focus system: wired structure, motors, and early operational experience (1990s).FacebookThe Steadicam Group