USB 2.0 cameras must be compliant with the DirectShow
specification to work with NI-IMAQdx
Attributes need to be available through the DirectShow programmatic API in order to be accessed by the IMAQdx driver. If not all attributes are available through the DirectShow programmatic API then only those available will be accessible with the NI-IMAQdx.
For more information about troubleshooting USB cameras, please look at the following link:
Troubleshooting USB 2.0 (DirectShow) Camera Installation Problems