SULLIVAN & WORCESTER LLP ONE POST OFFICE SQUARE BOSTON, MASSACHUSETTS 02109 (617) 338-2800 FAX NO. 617-338-2880 IN WASHINGTON, D.C. IN NEW YORK CITY 1025 CONNECTICUT AVENUE, N.W. 767 THIRD AVENUE WASHINGTON, D.C. 20036 NEW YORK, NEW YORK 10017 (202) 775-8190 (212) 486-8200 FAX NO. 202-293-2275 FAX NO. 212-758-2151 April 2, 1998 FOCUS Enhancements, Inc. 142 North Road Sudbury, Massachusetts 01776 Gentlemen: We are familiar with the Registration Statement on Form S-3 (the "S-3 Registration Statement") to which this opinion is an exhibit, to be filed by FOCUS Enhancements, Inc., a Delaware corporation (the "Company"), with the Securities and Exchange Commission under the Securities Act of 1933, as amended. The S-3 Registration Statement relates to the proposed public offering by certain securityholders of the Company of a total of 1,441,224 shares (the "Shares") of the Company's Common Stock, $.01 par value per share ("Common Stock"), consisting of: (i) 1,092,150 shares issued to JNC Opportunity Fund Ltd. (the "Investor") in connection with a private placement in March 1998 (the "March 98 Offering"); (iii) 327,645 shares issuable to the Investor upon the exercise of warrants (the "Investor Warrants") issued to the Investor; and (iv) 21,429 shares issuable upon the exercise of warrants issued to the placement agent and its designee (the "Broker Warrants" and, together with the Investor Warrants, the "Warrants") in connection with the March 98 Offering. We have acted as counsel to the Company in connection with the preparation of the S-3 Registration Statement, and we have examined and relied on the originals or copies, certified or otherwise identified to our satisfaction of all such corporate records of the Company and such other instruments and other certificates of public officials, officers and representatives of the Company and such other persons, and we have made such investigations of law, as we have deemed appropriate as a basis for the opinion expressed below. In making such examination, we have assumed the genuineness of all signatures, the legal capacity of natural persons, the authenticity of all documents submitted to us as originals and the conformity to the originals of FOCUS Enhancements, Inc. April 2, 1998 Page 2 all documents submitted to us as copies, which facts we have not independently verified. As to various facts material to the opinions set forth herein, we have relied without independent verification upon certificates of public officials and upon facts certified to us by officers of the Company. We express no opinion herein as to any laws other than the General Corporation Law of the State of Delaware. Based upon the foregoing, we are of the opinion that the Company has corporate power adequate for the issuance of the Shares issuable in the manner set forth in the S-3 Registration Statement and offered pursuant to the S-3 Registration Statement. The Shares issuable upon the exercise of the Warrants, assuming conversion or exercise on the date hereof (the "Relevant Shares") have been duly authorized and reserved for issuance. Upon the exercise of the Warrants into Shares and delivery of such Shares in accordance with the terms of the Warrants, the Relevant Shares so issued will be validly issued, fully paid and non-assessable. We hereby consent to the filing of this opinion as an exhibit to the S-3 Registration Statement. Very truly yours, /s/ SULLIVAN & WORCESTER LLP SULLIVAN & WORCESTER LLP