SUNNYVALE, Calif. — September 17, 2003 — OmniVision Technologies, Inc. (Nasdaq: OVTI), a leading independent supplier of CMOS CameraChip™ solutions for high-volume imaging applications, today announced the appointment of John T. Rossi as Vice President of Finance and Chief Financial Officer.

Mr. Rossi joins OmniVision after more than 20 years of experience in the securities industry and in technology corporations. Since September 2002, he has served on the Board of Directors of OmniVision and managed Rossi Advisors, LLC, a financial consulting firm for clients in information technology. From April 1990 to September 2002, he was a Managing Director at Robertson Stephens Inc., where he spearheaded Robertson Stephens’ extensive involvement with digital media companies and served as head of the digital media investment banking group and as a member of the commitment committee. Before entering the securities industry in 1987 with Alex. Brown and Sons, Mr. Rossi held executive positions in finance with Quantum Corporation and in international marketing and public affairs with McDermott Inc. He has an M.B.A. from Stanford University, an M.A. from Tulane University, and a B.A. from Lafayette College.

“We are very pleased to have John join our management team, because he is already a valuable contributor to OmniVision. He has worked closely with us for almost four years — first as our banker and advisor and then as a member of our board. His good business judgment and extensive experience will be important assets as we expand our operations overseas and address new product markets,” said Shaw Hong, president and CEO.

Mr. Rossi succeeds H. Gene McCown, who will begin his previously announced retirement after a transition of responsibilities to Mr. Rossi.

Safe Harbor

Certain statements in this press release, including statements relating to our expectations regarding our planned expansion overseas and our ability to successfully address new product markets, are “forwardlooking statements” as defined in the Private Securities Litigation Reform Act of 1995 and are subject to risks and uncertainties. These risks and uncertainties, which could cause the forward-looking statements and our results to differ materially include, without limitation, the degree to which intense competition might affect our ability to compete successfully in our current markets and in emerging markets; the delay in the acceptance of CMOS technology for mass market image sensor applications; the inability to timely develop and introduce new products; the failure to achieve the anticipated benefits from our planned operations in China; the diversion of management’s attention resulting from the planned overseas expansion or attempts to penetrate new product markets; the failure to obtain design wins from image sensor product manufacturers; and the other risks detailed from time to time in our Securities and Exchange Commission filings and reports, including, but not limited to, our most recent quarterly report filed on Form 10-Q. We disclaim any obligation to update information contained in any forward-looking statement, whether as a result of new information, future events or otherwise.