Decline in picture quality using external webcam

When video conferencing in iChat using, say, an Ipevo Point 2 View external webcam there's a very noticeable decline in picture quality, even on the local screen, as compared to using the same camera with the supplied Ipevo software, where the image is crystal clear. Of course that software has to be disabled in order for iChat to recognize the webcam. It matters when trying to review detailed prints over the internet. What am I up against here? Would it help if a better quality camera was installed? Interestingly the built-in iMac camera actually performs slightly better under the same circumstances.

Images have to be hosted somewhere on-line and then you use HTML
For my Sig pic
<img src="/___sbsstatic___/migration-images/123/12322112-1.png" width=100>
The width thing just resizes it.
EDIT
From the iGlasses site
Fine-Tune To Look Your Best
Adjust the following camera settings from within your favorite program:
||Reproduced table ||
|Brightness|Contrast|Color Balance| Hue
Focus| Gain| Orientation |Shutter Speed
Zoom | White Balance |Sharpness | Saturation
Note: Some cameras may not offer all of the settings listed above. See details in the online manual.
Seems some cameras may not have the function in the dirt palce
10:17 PM Thursday; September 23, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
Message was edited by: Ralph Johns (UK)

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