See Raspberry Pi Cameras ('RaspiCam') in setup
Some controls can only be set when certain conditions are met. For example, 'Exposure Time Absolute' can only be set when 'Exposure Auto' is set to manual. In some cases, these conditions are not intuitive. On the RaspiCam, setting the scene mode will override the Exposure Auto = manual setting, making Exposure Time Absolute unavailable.
Additionally, some controls have been observed to have no affect even when they should. This is still being investigated, and may be an issue with the video4linux driver(s). If you come across this behavior, please open an issue and specify the camera you are using and the control that does not function.
The only settings shown are those that the camera reported as supported. If you get a warning that your camera has unimplemented controls then please click the link to submit an issue. Otherwise, any 'missing' controls are not shown because they are not supported by your camera.