2008منتدى Batteries/Power
انتقاء البطاريات والاحتياجات من الكمية اللازمة لتشغيل كاميرات سينما 35 ملم وHD على أجهزة ثابتة
مضى على هذا 18 سنة. قد تكون المعدات والأسعار قد تغيّرت منذ ذلك الحين.
ما توصّل إليه النقاش
- ويتطلب العمل بالكاميرات المهنية ثلاث مجموعات على الأقل من البطاريات، مع تفضيل أربع إلى خمس مجموعات على حساب آلات التصوير بالكهرباء، وقيود الشحن، وفشل البطاريات خلال أيام إطلاق النار الكاملة.
- The Sony F900 draws approximately 10 amps from the camera plus an additional 5 amps for rig accessories, totaling 15 amps load, which Trimpac batteries cannot reliably deliver due to excessive current draw.
- فبطاريات النيكل النيكل المميتة الثلاثية الأبعاد لها فترة طويلة من عمر التشغيل ويمكنها أن توفر رسماً عالياً عند الحاجة، مما يجعلها مناسبة للعمل الأساسي الذي يبلغ 35 ملم عندما تكون متطلبات القدرة على التصوير معتدلة.
- Hytron 140 batteries provide approximately 40 minutes of runtime per charge on power-hungry cameras after several usage cycles, requiring four backup batteries for every battery on a charger with a 2.75-hour charge cycle.
- Dionic 90 batteries have proven reliable over multiple years and many charge cycles, successfully powering cameras ranging from 35mm formats to 435 at 96 frames per second.
- Operators successfully used six Trimpacs combined with two Hytron 120 batteries to power various camera formats including 35mm, 235, 435, Arricam, HD, and Silicon 2K over a four-year period.
- Trimpac batteries are wider than Hytron or Dionic models, creating potential interference with operator leg positioning during handheld rig operation.
- Lithium-ion batteries from certain manufacturers may have delayed delivery or reliability issues that warrant caution before commitment.
يعتمد على
- Discussion focuses on stabilized rig power requirements and may not apply to other camera support methods.
- Runtime calculations are based on specific charger models and degrade with battery age and cycle count.
- F900 requirements mentioned but noted as likely to be sourced from rental equipment rather than personal batteries.
- Budget constraints mentioned by questioner may limit practical implementation of ideal battery quantity recommendations.
- The discussion does not establish definitive runtime specifications for Trimpac batteries with specific camera models.
- One negative experience with a specific lithium-ion battery manufacturer is mentioned without detailed technical analysis.