There are some cases wherein digital zoom is required to implement in your Directshow camera application. For example, some camera modules support a few levels of optical zoom and user have a need of more zoom level apart from the supported camera optical zoom or some camera won’t support optical zoom at all. If this is your case, then this blog post can give you some pointers to implement the digital zoom in your Directshow camera application on window CE 6.0.
http://www.e-consystems.com/blog/windowsce/?p=544
http://www.e-consystems.com/blog/windowsce/?p=544
