SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*

                                PPT Vision, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    693519100
                                 (CUSIP Number)

                                December 31, 1998
             (Date of Event Which Requires Filing of this Statement)

Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

         [X]          Rule 13d-1(b)
         [   ]        Rule 13d-1(c)
         [   ]        Rule 13d-1(d)

Check the following box if a fee is being paid with this  statement  [X]. (A fee
is not required only if the filing person:  (1) has a previous statement on file
reporting  beneficial  ownership  of more  than  five  percent  of the  class of
securities  described  in Item 1;  and (2) has  filed  no  amendment  subsequent
thereto reporting  beneficial  ownership of five percent or less of such class.)
(See Rule 13d-7).

*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).

                                Page 1 of 5 pages





- --------------------------------------------------------------------------------
CUSIP No.    693519100
- --------------------------------------------------------------------------------

                  13G

- ---------- ---------------------------------------------------------------------

    1      NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON  (entities only)

           Perkins, Wolf, McDonnell & Company
           ID No. 36-3099763
- ---------- ---------------------------------------------------------------------
- ---------- ---------------------------------------------------------------------

    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
           ---------------------------------------------------------------------
           N/A
           ---------------------------------------------------------------------
           (SEE INSTRUCTIONS)
- ---------- ---------------------------------------------------------------------
- ---------- ---------------------------------------------------------------------

    3      SEC USE ONLY                                   (a) [    ]
                                                          (b) [    ]
- ---------- --------------------------------------------------------------------
- ---------- --------------------------------------------------------------------

    4      CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
- ---------- ---------------------------------------------------------------------
- --------------------------- ---- -----------------------------------------------

                             5   SOLE VOTING POWER

                                       -0-
     NUMBER OF SHARES
  BENEFICIALLY OWNED BY
  EACH REPORTING PERSON
           WITH
- --------------------------- 
                            

                             6   SHARED VOTING POWER

                                       348,600
- --------------------------- ---- -----------------------------------------------
                            ---- -----------------------------------------------

                             7   SOLE DISPOSITIVE POWER

                                        -0-
- --------------------------- ---- -----------------------------------------------
                            ---- -----------------------------------------------

                             8   SHARED DISPOSITIVE POWER

                                        348,600
- --------------------------- ---- -----------------------------------------------
- ---------- ---------------------------------------------------------------------

    9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                      348,600
- ---------- ---------------------------------------------------------------------
- ---------- ---------------------------------------------------------------------

   10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
           (SEE INSTRUCTIONS)
           ---------------------------------------------------------------------

           ---------------------------------------------------------------------

- ---------- ---------------------------------------------------------------------
- ---------- ---------------------------------------------------------------------

   11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                                     6.33%
- ---------- ---------------------------------------------------------------------
- ---------- ---------------------------------------------------------------------

   12      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

                                      IA
- ---------- ---------------------------------------------------------------------
                                Page 2 of 5 pages





Item 1(a).    Name of Issuer:

PPT Vision, Inc.

Item 1(b).    Address of Issuer's Principal Executive Offices:

10321 West 70th Street
Eden Prairie, MN  55344

Item 2(a).    Name of Person Filing:

Perkins, Wolf, McDonnell & Company

Item 2(b).    Address of Principal Business Office or, if None, Residence:

53 W. Jackson Blvd., Suite 722
Chicago, IL  60604

Item 2(c).    Citizenship:

Delaware

Item 2(d).    Title of Class of Securities:

Common Stock

Item 2(e).    CUSIP Number:

693519100

Item 3. If This Statement is Filed Pursuant to Rules 13d-1(b) or 13d-2(b), Check
Whether the Person Filing is a:

(e)  [X]      Investment Adviser

Item 4.  Ownership:

     (a)      Amount Beneficially Owned:  348,600

     (b)      Percent of Class:  6.33%




                                Page 3 of 5 pages







   (c) Number of Shares as to which such person has:

   (i)      sole power to vote or to direct the vote -  -0-

   (ii)     shared power to vote or to direct the vote -  348,600

   (iii)        sole power to dispose or to direct the disposition of - -0-

   (iv)     shared power to dispose or to direct the disposition of - 348,600

Item 5.  Ownership of Five Percent or Less of a Class:

              N/A

Item 6.  Ownership of More than Five Percent on Behalf of Another Person:

              N/A

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
         Security Being Reported on By the Parent Holding Company:

              N/A

Item 8.  Identification and Classification of Members of the Group:

              N/A

Item 9.  Notice of Dissolution of Group:

              N/A

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
purposes or effect







                                Page 4 of 5 pages





                                    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.

Dated:   March 19, 1999




                                                /s/ Gregory E. Wolf
                                                 Gregory E. Wolf































                                Page 5 of 5 pages