To achieve the best image quality on the monitor when the motion picture camera is not running, the "auto/manual" switch on the C-5 must be set to auto and the FLX must be in the film mode. The reason is that when the film camera is not running and you have the FLX set for film, the video assist is not in the flicker-free mode giving a better video image. Once the camera starts, the video assist gets a pulse through the special power cable causing the video assist to go into flicker-free mode automatically. The power cable to the C-5 must be the type that supplies a shutter pulse signal from the motion picture camera. This would be either a 3-pin fisher for Arri 24 volt cameras or an 11-pin fisher for Arri 12 volt cameras. The Moviecam SL uses a 5-pin fisher for sync and a 3-pin fisher for power to a 2-pin fisher in a "Y" cable format. When using a C-5 that is re-housed by Moviecam, the power cable is not used. You do need a sync cable coming from the camera which is a 5-pin fisher cable to the color-5's 2-pin fisher connector. The shutter pulse is required when you have the FLX in the film mode. Again, this will give you the best quality video image when the film camera is not running.