[Ropes & Gray LLP Letterhead]







December 11, 2007



Metropolitan Series Fund, Inc.
501 Boylston Street
Boston, Massachusetts 02116

         Re: Registration Statement on Form N-14


Ladies and Gentlemen:

     We have acted as counsel to Metropolitan  Series Fund, Inc. (the "Company")
in connection with the  Registration  Statement of the Company on Form N-14 (the
"Registration Statement") being filed by the Company under the Securities Act of
1933, as amended (the "Act"),  relating to the proposed  combination  of the MFS
Value  Portfolio (the "Acquired  Portfolio"),  a series of Met Investors  Series
Trust (the  "Trust"),  and the Harris  Oakmark Large Cap Value  Portfolio (to be
renamed the MFS Value  Portfolio) (the "Acquiring  Portfolio"),  a series of the
Company,  and the  issuance of Class A shares of common  stock of the  Acquiring
Portfolio in connection  therewith (the  "Shares"),  all in accordance  with the
terms of the  proposed  Agreement  and Plan of  Reorganization  by and among the
Trust on behalf  of the  Acquired  Portfolio  and the  Company  on behalf of the
Acquiring   Portfolio  (the   "Agreement  and  Plan  of   Reorganization"),   in
substantially  the  form to be  included  in the  Registration  Statement  as an
exhibit.

     We have examined the Company's  Articles of  Incorporation,  as amended and
supplemented  (collectively,  the  "Articles"),  and the  Company's  Bylaws,  as
amended.  We have also  examined  such other  documents  and  records as we have
deemed necessary for the purposes of this opinion. Additionally, we have assumed
that,  as of any date of issuance of the Shares  pursuant to the  Agreement  and
Plan of  Reorganization,  the number of issued Shares will not exceed the number
of Shares authorized to be issued under the Articles.

     We have assumed for purposes of this opinion that, prior to the date of the
issuance of the Shares,  (1) the Trustees of the Trust and the  shareholders  of
the  Acquired  Portfolio  will have taken all  actions  required of them for the
approval of the Agreement and Plan of  Reorganization  and (2) the Agreement and
Plan of Reorganization  will have been duly executed and delivered by each party
thereto and will constitute the legal,  valid and binding  obligation of each of
the Company and the Trust.

     Based upon and subject to the foregoing, we are of the opinion that:

     1.   The Company is a corporation  duly  incorporated  and validly existing
          under the laws of the State of Maryland.

     2.   When   issued  in   accordance   with  the   Agreement   and  Plan  of
          Reorganization,  the  Shares  will be validly  issued,  fully paid and
          non-assessable by the Company,  assuming that as consideration for the
          Shares  not less  than the net  asset  value and the par value of such
          Shares  has  been  paid  and  that  the  conditions  set  forth in the
          Agreement and Plan of Reorganization have been satisfied.

     We  understand  that  this  opinion  is to be used in  connection  with the
registration of the Shares for offering and sale pursuant to the Act. We consent
to the filing of this opinion with and as part of the Registration Statement and
further consent to the references to our firm in the Registration Statement.

                                                Very truly yours,


                                                /s/ Ropes & Gray LLP
                                                Ropes & Gray LLP