ONVIF adoption is far outpacing PSIA in almost 1 year of manufacturer announcements for 'standards' production support. As of July 2010, according to the 2 group's conformant product lists, ONVIF reports 33 manufacturers supporting their 'standard', while PSIA only lists 2 manufacturers (Texas Instruments and IQinVision).
The magnitude of the gap is likely somewhat less than the total number noted on each list. ONVIF released its conformance tool over 6 months ago while PSIA released their conformance tool only 1-2 months ago. As such, there are likely a number of other manufacturers who are shipping in production but have not done the test or not yet published their results (e.g., Milestone supports PSIA since last December and Luxriot announced PSIA support in their April release). Secondly, given Texas Instrument's large role as a component supplier for IP cameras, their adoption and support of PSIA should foster its use in their camera manufacturer partners.