Doc # INS-16001
Issue Date: 07/20/2016
Revision: 2.1.0.0
Page 19 of 27
5.8.
Focus
5.8.1.
Trigger Autofocus
The Credential Cam Pro Plus USB 2.0 camera is fully UVC compliant. All basic camera controls can be
accessed via the standard UVC command protocol.
Focus
Please note that Focus is a standard UVC supported command. However, depending upon the
software package being used, the focus menu item can be difficult to find. For example, in AMCap,
the focus command is located as follows:
Options >> Video Capture Filter >> Video Proc Amp >> Camera Control >> Focus
Since the Credential Cam Pro Plus photo ID camera is a push-to-focus device, you must toggle the
focus flag from “0” to “1” in order to initiate a focus. If the focus flag has been left at a “1”, you
must first set it to “0” and then to “1”.
Flash
Please note that automatic FLASH control is not a standard UVC supported command and is not
included as part of the standard UVC interface.
To overcome this problem, the Credential Cam Pro Plus camera includes an internal processor that
automatically detects when a snapshot command has been issued and triggers the flash. Some
applications, however, do not issue a snapshot command to the camera. In these instances, the
application needs to be modified to include the necessary flash control commands.
The full capabilities of the camera can be demonstrated using the simple Viewer application
provided.