"Hi Alex,
Please have a look in the following discussion: http://diydrones.com/forum/topics/penguin-uav-airframe
Penguin could give you 'well over 1 hour and still have a payload capability to support a camera,GPS, and transmittor '. Please email me…"
"Hi,
I would recommend a Penguin UAV Airframe for your project. The design of Penguin is very efficient and clean and you would easily obtain 1+ hours of electric flight. There is a lot of space for DSLR (or even two of them).
Please visit…"