Gossen Luna-Pro User manual

Repro
                                       Copying
                                      Attachment





          Prices and Specif ications subject to change without notice.                                                                       fors                                   G^OSSENGosse n Division
BERKEY MARKETING COMPANI ES25-20 Brooklyn-Oueens  Expwy. West, Woodside, NY 1 1 377 t  (2121932'40401011 Chestnut  Street, Burbank, Calilornia 91506        r  (213) 843-1883               Luna-Pro
94sGo178(c)                      Printed in [J.S,A.

2-                                    Note: Before reading the following detailed
                                                         instructions, you should be completely familiar
                                                       with the general operating procedures ouilined in
                                                the Luna-Pro or Luna-Pro sbc owner's manual.


The Repro Attachment for the Luna-Pro is
designed to give you proper exposure information
when photographing  f lat copy such as paintinqs,
documents, prints, etc. lt can also be used for
measuring backl it transparencies and translucent
articles. To facilitate positioning with backlit
subjects, a locating guide is provided for                             www.butkus.usattaching to the back of this attachment.
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ATTACHING TO THE METER
Both the Luna-Pro and Luna-Pro sbc will accept
the Repro attachment. Before attaching to !l'te
meter, the locating guide should be applied to the
                                                                                                                             f rombacf< of the attachment. Remove the backing
the adhesive label. Line up the dots with the holes
                                                                             f lat.in the attachment and Press

                                            Fastening the Repro attachment to  either
                                               Luna-Pro is done in the same manner. lt can be
                                                  used either facing up for measuring light intensity
                                           when using  f lat ref lective copy or facing down for
                                                         backiit work such as transparencies
                                       When mounting the Repro attachment facing uP,
                                                        slide the hemispherical  diff user of the Luna-Pro
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Repro attachmentto the right so that it fits into the cavity of the      The method of mounting the                                                         for readi!g transparencies (facing down) is theattachment. while depressing the locking button
(i) on the side of the attachment, place the lug (3)      same as t9, facing uB except the hemispherical
of'the attachment into the accessory opening of        diffuser of the met-er is srid to the left to fit in the
inr Luna-pro. Swing the attachment  f lush to the        cavity of the attachment.
front of the meter and release the button, locking
the attachment in Place.                       PREPARING FOR A MEASUREMENT                                                 The original to be copied will normally be placed
                                           on a horizontal surface or fastened to a vertical
                                                   one. The camera must be positioned so that its                                                                     'axis                                                          optical     meets, Et right angles, the center
                                                       point of the subject to be copied. The distance
                                            between the camera and su bject shou ld be                                                                  caref u  f ly selected to  f ill the camera  f rame as
                                                  completely as possible without cropping. care
                             www.butkus.usshould be exercised when using calneras where                                                   the taking lens is not on the same axis as the
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viewing lens to make sure that parallax problems    MEASURING WITH THE LUNA-PRO
                                            be                         must                         situation             The     corrected for.are                                             Measurements with the Luna-Pro and Repro                                                     for                             adjustments                        final lens                  afterdouble-checked                                                  attachment are made in a normal manner, exceptfocus and maximum sharPness.                                                              that the indicated scale reading is aligned with the
Taking care that no part of your body is shading      green index circle on the meter's computer ring.
                                              thethe ltlumination of the original, place
Luna-Pro Repro attachment  f lat on the subject so                                        }-.I                             \)         lt
that the measuring aperture (1) is facing the   )
camera. Because incident light readings are to be
                                            onlyutilized, it is essential that the meter is
influenced by the illumination that is to be used
                                               thefor the copying work and that none of
illumination  is shaded by your hand, arm or body.     MEASURING WITH THE LUNA-PRO SbC
                                                                                         Repro                                          Before taking a reading with the
                                                attachment and the Luna-Pro sbc, rotate the
                                              exposure correction ring on the Luna-Pro sbc
 I                                                                                                                                                I

until the top index mark lines up with the + 3 EV                                            BACKLIT ORIGINALSmark. Measurements can now be made in the
normal fashion, with readings taken directly  off      Mount the Repro attachment with the measuring
the calcu lator d ial  .                                   aperture facing down as described previously.





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EXPOSURE CORRECTIONS
When doing copying, corrections to the indicated
exposure must often be made because of filters,
extension factors, etc. which can affect the final
results. With the Luna-Pro, these adjustments
must be made to the indicated readings after the
measurement is taken. With the Luna-Pro sbc, the
correction factors can be programmed into the
exposure correction ring and the results used
directly from the comPuter dial.


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