DL2 Cameras / D-tec

Hi,
I've got a small system out and want any advice to get the best out of the cameras that are inbuilt into the DL2's.
At the moment I'm finding it hard to get cue's to look good.
I have three DL2's with one acting as a camera source being fed back to the other two fixtures in a 2 x 1 collage.
It's all looking a bit blair witch at the moment,been playing with lighting levels etc but the projected image is not as clear as i would have hoped or liked.
Any tips on how to precue or mark perhaps camera's ques on a Hog ???

I know the camera's are what they are but I'm sure the image could look better than it does.Also been playing with the camera settings/indoor/outdoor etc but not much change.

Has anybody ever used a d-tec mix pro that constantly resets it's DMX address when you power it down or is that a feature? Does it have an inbuilt battery that might need to be replaced.
Have to set the DMX address every day.

Thank you Cormac