Hello.
I wonder if anybody knows how to control zoom of the web cam. I have QuickCam 4000 Pro and it has this zoom function, so i'm trying to get how to use it.
Posted on 2003-08-11 08:22:49 by masnick[CCCP]
which API do you use for controlling the cam?

For MCI there might be a control string for setting the zoom, but this has to be documented for this camera model by the manufactorer.(unlikely).

If you use the capXXX API, there are some functions to set different properties, but I found none for setting the zoom :(

The new COM based Windows? Image Acquisition (WIA) API gives direct access to a zoom property: WIA_DPC_DIGITAL_ZOOM,
but it will be rather difficult to control the device with this API (if you did not already :)). But there is a nice tutorial at Microsoft (C++)!
Posted on 2003-08-14 10:13:10 by beaster