Accura Zoom Duplivar Slide / negative duplicator User manual

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www.butkus.us The Accura ZOOM.DUPLIVAR uses the popular *T"          ring to                                                                                                    l.O. Crop to any desired composition by turning
 system of camera fittings. This permits the unit to      the zoom ring.
be used with virtually all 35 mm SLR cameras with   THE SLIDE AND FILTER STAGE
focal plane shutters. Screw the appropriate ..T',      The front end of the Accura ZOOM-DUPLIVAR  is a
 adapter onto the Accura ZOOM-DUPLIVAR and         double channel stage. The inner channer accommo
                                                               X 2" slide mounts.mount  t he unit to the camera in the usual manner.      dates 2
By loosening the three small setscrews in the "f"      A white positioning dot quickly centers the slide over
                                                      the shooting aperture. The outer channel acceptsadapter, the Accura ZO0M-DUPLIVAR may be oriented
so that the scale markings are upright and centered.      standard series Vll filters .or gelatins cut to  fit.
ZOOMING' FOR THE DESIRED COMPOSITION     The front diffuser plate is hinged and swings open
The calibrated zoom ring indicates the magnification
from the full scale (1:1) setting of 1.0 to the maximum
magnif ication (2: t t at the 2.0 setting.
CORRECT FOCUS IS ALWAYS AUTOMATIC.
For full scale, no cropping reproduction set the zoom

to facilitate positioning of the slide. The entire stage    THE S LR VIEWFINDER
                                                            In most SLR cameras, the mirror is not large enough slides up and down and may also be rotated by
                                                    to reflect the whole subject onto the viewing screenloosening the setscrew located immediately behind
                                               when long telephoto lenses, tubes, bellows or special
the stage.    This permits the centering of any part                                                              devices such as the Accura ZOOM-DUPLIVAR are used.
of the original slide being photographed.                                                            This results in a black-out along the entire upper edge
                                                      of the viewing screen which is actually the image of
                                                      the end of the mirror.   This is a limitation of the
                                                                     mirror-viewfinding system and in no way indicates any
                                                      improper functioning of the Accura Z0OM-DUPLIVAR.
                                              The image recorded on the film will be complete and
                                                          free of cut-off.  While actual cropping and exact
                                                     composing r,nay be  limited to the bottom and both
                                                                          sides, you will be able to judge quite accurately the
                                                    upper limit as well.  lf the upper edge is critical as

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far as composition is concerned, place the slide upside      LIGHTING
down, or rotate the stage lg0" so that the edge           In actual use, the Accura ZOOMDUPLIVAR is pointed
 will be visible in the bottom of the viewrng screen.         towards the light. The diffusion screen should be in
                                                       the closed position over the slide.  Generally, the
                                                                                          s quarely with the light source,Just as the rhicrogrid and rangefinder prEms oo not         unit is lined up
operate with long telephotos and bellows extensions,         although  it may be advisable at times, such as
they also do not function with the Accura Z0OM       when the light is too strong, or if a hot spot re-
DUPLIVAR: Thus, half the rangefinder prism will be         sults, to direct the light at a diff used white surface
blacked out and the microgrid pattern will not clear        placed at 45 degrees to the Accura ZOOM.DUPLIVAR.
even though the image is critically in focus.
                                     CHOICE OF LIGHT SOURCE
                                                       Almost any light source may be used successf ully to
                                              make black & white negatives from color slides.
                                           To make color dupes, the color quality of the light
                                                    must be correct for the kind of film being used, as
                                                                         illustrated in this table.

All Daylight Films: use Daylight, or Electronic flash     CHOICE OF FILM

                                                                     yet,each particular type of film has its own unique.t         For rYPeA F'ms: (+81A filter-optionat)       -        Any color film can be used for duplicating color slides-
                                                                                     oualities which should be considered in terms of the   .                     ;"r:fij'J"r"rTr:l'#  J[::
                                                                          desired result. The light source, of course, must      '        For TypeB Films: use 3200" K Lamps and no filter *
                            or photoflood Lamps+81A  Filter        match the color balance of the film, either directly
              Daylight color film with an electronic flash as the       or in conjunction with the appropriate  filters.
               light source is recommended as the easiest-to-use      The most accurate duplicate is achieved with the
              combination, since electronic flash does not increase          special duplicating color emulsions such as those made
                                                                                                                                                special              contrast or introduce color shift, nor does it buckle or       by GAF, Agfa and others. These frlms have
             heat-damage the slides. lts rapid flash also elimin-         low contrast characteristics to counteract the ten  -
             ates the danger of blur due to camera vibration.          dency towards increased cont rast in the duplrcating
                                                                               process.                        :k Use 3200" ,K lanps, in preference to photofloods. They have
                longer  life, rrore even. light output and more constant color            lf you wish to use regular color films, the following
                   quality than photofloods.                                          considerations should determine yotrr selectton.

                                                                                                 J

www.butkus.usKodachrome  Il is recommended for use with original        -these tables should be used as a starting point :nly.
slides which are low in contrast, Ektachrome X for
                                                                                 lf your results are consistenfly too light, decreasenormal contrast originals. To arrive at the combination
                                                      your exposure;  if too dark, increase your exposure.of film and light source best suited for your particu-                                                               In making tests, use several exposures, some more,
 lar type of work, Som€ sxpgrimenting will be found     some less, some at the estimated correcr exposure
 advisable.                                                           setting. Using a 500 watt lamp placed 6 inches from
Select one or several brands of your choice of color       the front of the Accura ZOOM-DUPLIVAR, use the
film and duplicate three test slides which represent         following guide for your initial exposure tests.
low, normal and high contrast originals                ASA Film Speed              Shutter Speed
                                                                     8                   1/4 second
EXPOSURE                                                     25                  r/n      t
The following tables offer EXPOSURE SUGGESTIONS                    40                   1/25        il
for a number of films and light sources. Since                  125                      I/60          il
individual conditions .,vary considerably-type of slide,        Using a 4O watt-second electronic flash unit, with an
personal taste, processing, shutter efficiency, etc.      ASA film speed of I25, try a light.to.duplicator dis-

tance of 12 inches. With ASA 64 film, try a light-           effective f value, some error in meter function may
distance of 9 inches.                                        occur. This error will be a constant one and can be
                                                            evaluated after your first roll. lt is then readily
Using GAF Duplicating type 54/ (approximateASA25)                                                     compensated for by altering your ASA speed. Use a
use a f 211 enlarging lamp at a distance of 9 inches          higher ASA value if your results are overexposed; a
and 1 second exposure time. No balancing filter is                                                         lower ASA value if results are underexposed.
required.



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           : Behind the lens metering systems may be used if a    USE OF FILTERS -COLOR
 constant light source of suff icient intensity is utilized tv           Filters are often required to correct light sources so
                                                                                                                                                                                                                                                                               f or the type activate the nreter. Since there is no variabie diaphragm          that they will be in proper color balance
or meter coupling on the Accura Z00M-DUPLIVAR,         of film being used
consult your camera manual on the use of the stop"        These should be placed lN FRONT of the slide to be
down metering method. Exposure will be controlled          copied, between the light and the s[de. Series Tfilters
                                                                                                                                                                                       f it directly and are'simply placed in the  f ilter channelby the choice of shutter speed and light-toslide  dis
                                                                                               i                                                  in  f ront of the Accura ZOOM DUPLIVAR. Filters maytance.      :
Since the meter is measuring the light at a small           also be used to create artistic effects, to,alter cslor

www.butkus.usfor " correction" of  f aults, etc.                              duplicate slide by hand.holding a camera with an
Thus, a bluish filter  ( such as an 82A or others of        Accura ZOOM-DUPLIVAR and pointing it towards a
the 82 series) may be used to cool an overly reddish            light source, this method is not conducive to reliable
slide; a yellowish filter (such as an 81C or others of            results.
the B1 series ) may be used to reduce excessive       Some sort of permanent or semi-permanent setup in
bluishness.                                                  which conditions, such as light-to-slide distance can be
Also, GAF and Kodak offer color compensating  filters          kept constant, is necessary for consistently good results.
which come in several rather pale densities of yelllow,         Mounting the camera on a stand, preferably a copying
cyan and magenta and may be bought in gelatine         stand with the light source placed on the baseboard,
form (2X2" and larger) for economy. Most filters          offers a suitable arrangement for working with the
require an increase in exposure-consult the filter        Accura ZOOM DUPLIVAR.
manufacturer's instructions for details. The use of         Records should be kept of lamp'to-slide distance'
filters for creative work is limited only by your imagi-         exposure, processing procedure, etc.
nation, but should be based on extensive experimentation.
MAKING A COPYING SETUP            WARRANTY
While it is entirely possible to make an occasional        The Accura ZOOM-DUPLIVAR has been inspected before
                                              -8-

shipment by the factory and will yield satisf actory results
when correctly used. lt rs guaranteed against all def ects
in labor and materials for a period of one year and
will be serviced free of charge (except for transportation
costs) should, with normal usage, any defects develop
during this warranty period.   Servicing must be
arranged through the dealer  f rom whom the unit
was purchased; if sent to Accura  f or  servicing,
a copy of the sales receipt must be enclosed to vali-
date the warranty.