whats an effective aerial photography platform?

I want to assemble a fixed wing system for aerial photography, but am wondering what would be a stable platform that could carry a digital camera and all the associated electronics. It would be great if I could find an airframe that could handle land

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gimbal servo

where can i find a servo that responds to velocity input, rather than position? i'm going to use it in a gimbal that wont be used for piloting the aircraft, so i don't need/want the camera to return to center every time i let go of the stick. would a

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