2012منتدى Cameras (Film/Video/HD)
خسارة الإشارة من طراز Canon 5D Mark II HDMI عند تسجيلها وتشغيلها لأغراض الرصد الخارجي
مضى على هذا 14 سنة. قد تكون المعدات والأسعار قد تغيّرت منذ ذلك الحين.
ما توصّل إليه النقاش
- The Canon 5D Mark II shiftes its HDMI output from HD to SD when recording begins, causing connected monitors and converters to lose signal for a few seconds during the shiftover.
- العلامة رقم 5D مارك الثالث و كانون 7D لا يظهرون هذا السلوك.
- ويسمح تركيب أجهزة البرمجيات السحرية على علامة الـ 5D مارك الثاني بوضع الكاميرا دائماً في نظام SD، والقضاء على التسرب من الإشارة.
- Some Blackmagic converter models require firmware downgrade to work reliably with the 5D Mark II's HDMI output switching, while newer Blackmagic mini-converters handle the switchover better than larger models like the Hyperdeck Shuttle.
- The 5D Mark II provides composite video output through a 3.5mm mini-jack port that does not cut out during recording, offering an SD-only alternative to HDMI.
- The 5D Mark III uses a USB port for video output in SD format rather than the mini-jack used on the Mark II.
يعتمد على
- The signal dropout is inherent to the 5D Mark II hardware and cannot be fully eliminated without either switching cameras or using custom firmware.
- Blackmagic converter compatibility varies by model and firmware version, with some models unable to recover from the Canon's HDMI handshake behavior.
- Alternative solutions like composite output require accepting SD resolution only on external monitors.
- The exact timing and success of workarounds may depend on specific hardware combinations and firmware versions used.