Alpina 4x5 view camera User manual

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For sharpness control in depth as shown, first focus sharply in the H axis, then in the
H1 axis (or along V and V' as appropriate). The t\lptna is equipped with a patented
angle indicator which shows the required tilt angle and direction lrom the difference
between the two focusing settings.

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The built-in angle indicator does away      Procedure tor sharpness
with trial-and-error fiddling for sharp-       distribution controlness distribution control.
It shows precisely the required angle        Carry out the steps in the sequence
tilt and direction; here 8' in the direc-       shown. Practice them first.
tion increasing the camera extension        1. Set all camera movements to zero.
(+).

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2. Use the coarse or fine adjustment to          Slide the angle-indicator scale until the
   focus a suitable image point sharply on         "O" mark is aligned with the edge of the
   the horizontal H line. (Or use the V line           fine-focus movement (as shown in photo
    for a depth control swing about a vertical         above-#1).
    axis.)                                      Turn the fine focusing drive to focus
  Where a subject point to be focused is          sharply on the opposite H' (or V') line.
   nol exactly on the H or V axis, regard the
   second focusing point H' (or V') as dis-
   placed by the same amount. Deviations
  are not critical and can if necessary
  be covered by a final adjustment and
   compensation.

4. Read off the required tilt degrees       5. Set the tilt angle (8 ) and direction
   (8' as shown) and tilt direction                              ( * ) on the tilt scale    either of the                                                                   -   (* above).                                      rear or the lens standard.'
   Note: * indicates a tilt increasing                  ' Sharpness distribution control by tilting the rear
           the ertension,                         (image) standard also changes the image per-
            indicates a tilt decreasing            Tiltingspective.the lens does not change perspective bui         -  the ertension.                           the tilt is limited by the lens's angle of view.

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6. Now reset the overall sharpness by       Simultaneous sharpness
  movement of the rear standard                                      control in two directions   (image standard).                                                     First adjust the sharpness distribution
   Carry out final tilt or swing correc-       between H and H'. Then adjust the
   tions by repeating 1. to 6.                 sharpness distribution between V and
                                                    V'. As the standards of the t\lPtna do
                                                 not yaw during swinging even when the
                                       camera is inclined, two-way sharpness
                                                control poses no problems.

The depth of field scale
By using tilt and swing for sharpness
distribution control (convergent planes
principle) you can sharply focus on
inclined subject planes even at the full
lens aperture.
To increase depth of field in front and
behind such a plane, however, you still
have to stop down. To indicate the re-
quired lens stop for this dePth, the
t\lptna has a depth of field scale for
4 x 5 inch / 9 x 12 cm format.
In the first place however always aim at
optimum sharpness distributlon by
using the tilts and swings. Then use the
depth of field scale of the \lPtna asfollows, after precisely focusing the
lens at its maximum aPerture.
                                   Operation:
                                                  1. Focus on the required distant sub-
                                                   ject detail (sharp focus at shortest
                                       camera extension).
                                                    Slide the depth of field scale (without
                                           moving the fine focusing drive) to set
                                                       at the zero line.

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Operation:                                  2. Focus on the required near subject
                                                     detail (sharpness at maximum cam-
1. Focus on the required distant sub-         era extension).
   ject detail (sharp focus at shortest       Read off the working aperture
  camera extension).                     shown on the scale and set this on
   Slide the depth of field scale (without         the lens (here tl11\.
  moving the fine focusing drive) to set
   at the zero line.

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                             The depth of field scale
                                  By using tilt and swing for sharpness
                                                 distribution control (convergent planes
                                               principlg) you can sharply focus on
                                                 inclined subject planes even at the full
                                              lens aperture.
                                  To increase depth of field in front and
                                          behind such a plane, however, you still
                                         have to stop down. To indicate the re-
                                       quired lens stop for this depth, the
                                           t\lptna has a depth of field scale for
                                       4 x 5 inch / 9 x 12 cm format.
                                                        In the first place however always aim at
                                 optimum sharpness distribution by
                                              using the tilts and swings. Then use the
                                       depth of field scale of the f\lptna as
                                             follows, after precisely focusing the
Sharpness control at close           lens at its maximum aperture.
range by tilting the lens
With close-ups even slight changes in
the position of the lens standard affect
critical sharpness. ln this case adjust
the lens tilt first by visual sighting as
shown, so that the planes of the sub-
lect, the lens standard and the image
plane meet in a common point.

lplna



   Precision made in Switzerland exclusiv"ty io,
Sinar Bron, Inc., 23 Progress St., Edison, NJ 08820
                   (201) 754-5800

                                                                    @ 1982 by Sinar Bron, Inc

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The Alpina 4 x 5 detivers high performance features:
o Exclusive depth-of-field scale for full-aperature focusing
o Patented angle scale to show how much and in what direction to tilt for
  sharpness control
o Yaw-free swings when the camera is tilted
o Full automation capability
o Full range of lenses and accessories for all 'round versatility-see enclosed
  brochures.