Doc # INS-SFT-15003
Issue Date: 08/12/2016
Revision: B
Page 21 of 30
5.8.
Focus
5.8.1.
Trigger AutoFocus
The 24C708AF is fully UVC compliant. All basic camera controls can be accessed via the standard UVC
command protocol.
Focus
Focus is achieved by selecting the Focus tab on the menu and pressing the “Trigger Focus” command.
Alternatively 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 24C708AF UVC compliant USB2 camera is a push to focus device, the user 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”, the user 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 24C708AF includes an internal processor that automatically detects when a
snapshot command has been issued, and triggers the flash at the appropriate time. Some applications,
however, do not issue a snapshot command to the camera, and in this case, 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.