I've attached that camera (or one that looks similar anyway) so my Esky Lama2. It works fine after some experimenting...

I tried connecting to the main heli battery first. It worked when on the ground, but as soon as I started the motor, interference started. I reckoned this was caused by voltage drop from the motor current taken from the battery. The camera requires 8V, but my Lama battery only provides 7.4V at rest, probably less once a hefty current draw starts.

Next I tried a PP3 9V battery. This worked fine, no interference. The Lama2 could lift it and fly stably and in control, but the revs required to keep it aloft were much more than normal - hot motors and short main battery life.

Final solution was to get a cheap pack of Lithium button cells, like the CR2032. These give 3V per cell, so I taped up 3 together. This only weighs a few grams, and powers the camera fine. I get about 2 hours of camera life from my 3 CR2032s taped together. The weight of this camera+battery doesn't seem to affect the Lama at all. These cells are much cheaper if you buy a box of 25 or 50 from EBay than getting them indivually from a shop.

As an extra weight saving I got rid of the chunky connector supplied with the camera. After cutting it open I discovered that there is a tiny power supply in the camera's side of the connector. I inserted it into a small bit of heat shrink and soldered a connector to my new Lithium battery pack directly.