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the length of the camera's baseplate and screw the bolt
clockwise into the tripod socket a few turns. Ensure
the alignment pin on the plate matches its respective
socket in the camera baseplate and continue to screw
the bolt until it is securely attached.
28
Spirit Level ░42, 43░
The dual-directional spirit level simply fits into the
flash hot-shoe and provides a check for both horizontal
and vertical photography. This can be particularly
useful when photographing buildings, for example. In
these cases the use of a tripod or stable camera support
is particularly recommended.
Ensure, however, that it is fitted correctly; see illustra-
tions. Note the difference depending on whether the
camera is in the horizontal or the vertical position.
Check that the spirit-level has been pushed all the
way into the shoe as far as it will go. Remember that
the spirit level is intended to be an aid in levelling and
cannot guarantee complete accuracy. Check the image
carefully in the viewfinder.
UV-Sky filter
The UV-Sky filter XPan (3054460) is designed for
use with the Hasselblad 4/45mm and the Hasselblad
4/90mm lenses. The filter absorbs some of the ultra-
violet rays present in light, which cause the appear-
ance of haze, particularly noticeable in photography at
high altitudes, for example. The use of a UV-Sky filter
can reduce this effect somewhat and also cause a slight
warming of tone on colour film.
The filter can safely be left on the lens for most photo-
graphic applications as it provides some protection for
the lens' front element not only against dust and rain
etc but also against scratches and accidental damage.
The filter is multi-coated to ensure high anti-reflection
quality. No degradation in MTF is seen and there is no
shift in focus.
Centre filter XPan for 45mm
The Centre filter XPan for 45 mm (3054453) is de-
signed for use only with the Hasselblad 4/45-mm lens
(3024015).
The 45 mm lens is free from vignetting with panorama
format images at lens aperture settings smaller than
f/8. However, natural light fall-off (a basic law of phys-
ics) reduces the exposure at the corners of the image by
roughly 1 f-stop.
This light fall-off at the corners causes visible effects
in critical photography when using transparency film.
Not For Resale
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