SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 SCHEDULE 13G

                  Under the Securities Exchange Act of 1934
                              (Amendment No.  )



                                   Imax Corp.
- ------------------------------------------------------------------------------
                               (Name of Issuer)


                                  Common Stock
- ------------------------------------------------------------------------------
                        (Title of Class of Securities)


                                   45245E109
- ------------------------------------------------------------------------------
                                (CUSIP Number)

*The  remainder  of this  cover  page  shall  be  filled  out for a  reporting
person's  initial  filing on this form with  respect to the  subject  class of
securities,  and for any subsequent  amendment  containing  information  which
would alter the disclosures provided in a prior cover page.

The  information  required  in the  remainder  of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities  Exchange
Act of 1934 (the  "Act")  or  otherwise  subject  to the  liabilities  of that
section  of the Act but shall be subject  to all other  provisions  of the Act
(however, see the Notes).


      (Continued on following pages)














                              Page  1 of 7 Pages

CUSIP No.45245E109 13G Page 2 of 7 Pages - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR IRS IDENTIFICATION NO. OF ABOVE PERSON OppenheimerFunds, Inc. I.R.S. No. 13-2527171 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* A ---- B X ---- - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Colorado - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER: 0 SHARES --------------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER: 0 OWNED BY --------------------------------------------------------------- EACH 7 SOLE DISPOSITIVE POWER: 0 REPORTING --------------------------------------------------------------- PERSONAL 8 SHARED DISPOSITIVE POWER: 3,375,000 WITH --------------------------------------------------------------- - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,375,000 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.36% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IA - -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! Page 2 of 7 Pages

CUSIP No.45245E109 13G Page 3 of 7 Pages - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR IRS IDENTIFICATION NO. OF ABOVE PERSON Oppenheimer Convertible Securities Fund I.R.S. No. 16-6289311 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* A ---- B X ---- - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Colorado - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER: 3,000,000 SHARES --------------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER: 0 OWNED BY --------------------------------------------------------------- EACH 7 SOLE DISPOSITIVE POWER: 0 REPORTING --------------------------------------------------------------- PERSONAL 8 SHARED DISPOSITIVE POWER: 3,000,000 WITH --------------------------------------------------------------- - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,000,000 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 9.21% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IA - -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! Page 3 of 7 Pages

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Item 1(a) Name of Issuer: Imax Corp. Item 1(b) Address of Issuer's Principal Executive Offices: 2525 Speakman Drive Mississauga L5KIBI Toronto, Ontario Canada Item 2(a) Name of Person Filing: OppenheimerFunds, Inc. Item 2(b) Address of Principal Business Office: Two World Trade Center, Suite 3400 New York, New York 10048-0203 Item 2(c) Citizenship: Inapplicable Item 2(d) Title of Class of Securities: Common Stock Item 2(e) CUSIP Number: 45245E109 Item 3(e) X Investment Adviser registered under Section 203 of the --- Investment Advisers Act of 1940 Item 4(a) Amount Beneficially Owned: 3,375,000 shares* Item 4(b) Percent of Class: 10.36% Item 4(c)(i) Sole Power to vote or to direct the vote - 0 Item 4(c)(ii) Shared power to vote or to direct the vote - 0 Item 4(c)(iii) Sole power to dispose or to direct the disposition of -0 Item 4(c)(iv) Shared power to dispose or to direct the disposition of - 3,375,000 shares *includes the number of common shares of Issuer that will be received upon conversion of the convertible bond by Oppenheimer Convertible Securities Fund. Page 4 of 7 Pages

Item 5 Ownership to Five Percent or Less of a Class: -------------------------------------------- If this statement is being filed to report the fact that as of the date hereof, the reporting person has ceased to be the beneficial owner of more than 5% of the class of securities, check the following: Item 6 Ownership of More than Five Percent on Behalf of Another Person: ------------------------------------------------------------ See Exhibit A hereto. Item 7 Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company: -------------------------------------------------------------- Inapplicable Item 8 Identification and Classification of Members of the Group: --------------------------------------------------------- Inapplicable Item 9 Notice of Dissolution of Group: ------------------------------ Inapplicable Item 10 Certification: ------------- By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: February 11, 1999 /s/ Merryl Hoffman Signature: ______________________________________ Name/Title: Merryl Hoffman, Vice President Page 5 of 7 Pages

EXHIBIT A --------- The Board of Directors or Trustees of the registered investment companies managed by OppenheimerFunds, Inc. ("OFI") and owning shares of the issuer can direct the disposition of dividends received by such funds and can dispose of such securities. Additionally, OFI shares the power to dispose of such securities with the Board of Directors or Trustees of such funds; however, the Board of Directors or Trustees of such fund has delegated these responsibilities to OFI as the fund's investment advisor under its investment advisory agreement. OFI has an interest relating to five (5%) percent or more of such securities as disclosed on Page 2 hereof, by virtue of the interest of five percent (5%) or more of such securities by Oppenheimer Convertible Securities Fund, as disclosed on pages 3 and 4 hereof. OFI disclaims ownership of such securities, except as expressly stated herein. Page 6 of 7 Pages

EXHIBIT B --------- The undersigned investment company hereby acknowledges and agrees that a report on Schedule 13G being filed by OppenheimerFunds, Inc. on or about the date hereof, relating to the Common Stock of Imax Corp. is filed on behalf of the undersigned. Dated: February 11, 1999 Oppenheimer /s/ Robert G. Zack By:______________________________________ Robert G. Zack Assistant Secretary Page 7 of 7 Pages