Thanks Steve,

Yes, that's right in line with what I've learned working with DirectShow, and the images captured by CameraDemoNet are the default video resolution which makes sense. My camera's capabilities, even if it doesn't support separate still image capture, are sufficient for my needs.

I got more familiar with the MCA libraries today and found Camera.ImageSize and .VideoSize and modified CameraDemoNet to set the resolution that the user chooses and it's working great. Since this behavior was what I expected I'll share what I did in case it's helpful to someone else.

First I modified btnGetImageRes_Click.I changed the local variable getImageRes to a new class member named arrImageRes sothe Size objects arealways available.

Then I added an event handler for the combo box:

private void CboImageRes_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if ( CboImageRes.SelectedIndex < arrImageRes.Length )
oCam.ImageSize = arrImageRes[CboImageRes.SelectedIndex];
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

The same can be done for the video resolution.

Margot