Lens Shade; Focusing; Rangefinder Focusing; Depth-Of-Field - Hasselblad XPAN II User Manual

Lens shade

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Match the red index on the rear of the XPan lens shade
(see illustration) with the red index on the lens. Turn
the lens shade (bayonet fitting) counter-clockwise
(when seen from behind the camera) until it clicks
into place and is secured against unintentional rota-
tion by the locking device. XPan lens shades have been
specifically designed for XPan lenses; other types of
lens shade are not recommended. The XPan lens shade
is designed so that it should be removed first before
a filter or lens cap is attached, changed or removed.
Remove the lens shade after first pushing the locking
device catch counter-clockwise.

When an XPan lens shade is fitted, there is a partial block-
ing of view in the bottom right of the viewfinder image.
However, this in no way affects the results.

Focusing

The lens is focused by turning the rubber covered
focusing ring that surrounds the lens barrel. Focusing
can be either visual, via the viewfinder/rangefinder
system, or manual. For the former see 'Rangefinder fo-
cusing'. For manual focusing align the chosen distance
on the distance scale against the lens central index.
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Rangefinder focusing

The rangefinder is a coupled-type in the form of a
small, bright rectangle in the centre of the field-of-
view frame in the viewfinder that provides a superim-
posed 'ghosted' image of a central part of the subject
(fig 20). The lens is turned until the 'ghosted' image
coincides with the subject image (fig 21)producing a
sharp focus setting for that particular distance from
the camera. You may find that subjects containing few
or no lines or sharp contrasts in the image are more
difficult to focus. Try pointing the camera to other ar-
eas of the subject containing vertical lines or contrast
changes that are approximately the same distance
away from the camera, focus at those points and then
return to your original composition. You may also find
it easier to turn the camera on its side if there are only
horizontal lines within the image, for example, when
photographing a near horizon.

Look directly into the viewfinder and not from an angle
otherwise it can result in inaccurate focusing.
20, 21

Depth-of-field

Depth-of-field – the amount of acceptable sharpness
produced at a given aperture and focus setting – can be
calculated as in the following example:
The aperture has been set at f/11 and the focus at 3
metres. By reading across from the relevant aperture
markings on the depth-of-field scale on either side of
the central index to the focusing distance scale, you
can see the extent of the sharp zone. In this example
the depth-of-field ranges from approx. 2 m to 7 m.
There are two tables at the end of the illustration sec-
tion of this manual that describe the depth-of-field
produced by the various combinations of aperture
settings and focus settings regarding 45mm and
90mm lenses. For example, when focused at 2 m and
set at f/8, the depth-of-field extends from 1.61to 2.66 m
with the 45 mm lens and from 1.89 to 2.13 with the 90
mm lens. See separate user manual for 30mm depth-
of-field table.
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Viewfinder

The viewfinder is a coupled rangefinder type with
the additional feature of automatic field-of-view
frame change according to the focal length of the
lens and chosen format. The field-of-view frame also
moves automatically to compensate for parallax er-
ror when photographing close subjects. The 90 mm
lens produces a larger rangefinder double-image
compared to the 45 mm lens. The viewfinder eye-
piece is interchangeable to suit individual eyesight.

Changing the viewfinder eyepiece

The standard dioptre of the viewfinder eyepiece is -1.0.
Five other strengths are available:+2D, +0.5D, -2D, -3D
and -4D. The eyepieces simply slide in and out of the
viewfinder frame, clicking into position and secured
by the locking device. Pushing the locking device but-
ton and simultaneously sliding the eyepiece from its
locked position can release it.
Please refer to the 'Viewfinder eyepiece selection' table
towards the end of this manual for a detailed descrip-
tion of choice.
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