topic Canon CN20x50 – Lens Vibration When Using FDP-400D Focus Demand in Professional Video

Canon CN20x50 – Lens Vibration When Using FDP-400D Focus Demand

rdn — Tue, 24 Feb 2026 14:12:50 GMT

I am using a Canon CN20x50 lens with a Zoom Demand ZSD-300D and a Focus Demand FDP-400D. When I use the Focus Demand, the lens shakes/vibrates. I have checked the manuals and couldn’t find any information about this issue, so I would like to know if there is a solution to this problem. All electrical contacts are clean and all the equipment is brand new.

Re: Canon CN20x50 – Lens Vibration When Using FDP-400D Focus Demand

John_Q — Thu, 26 Feb 2026 23:43:19 GMT

Hello rdn,

I would suggest contacting our phone support agents to better assist with this inquiry. They may require more information to better understand and troubleshooting this further. If you would like to speak with a Canon representative, please contact our Technical Support Team at 1-855-246-3367, seven days a week.