Gossen 15122 Thermometer User Manual


 
GOSSEN Foto- und Lichtmeßtechnik 5
1.2 Incident light and reflected light measuring mode
Incident light method
For the incident mode, the diffusor is to be
shifted to the left and placed in front of the
measuring aperture. Taking measurements
using the incident light mode in particular
produces perfectly exposed shots. In this
mode, the DS measures from the subject
towards the camera. This guarantees that
the tone quality of the picture is equivalent
to that of the subject. This is especially
important for very bright or dark subjects.
Even under very difficult photographying
conditions, as for example with subjects
which have a lot of contrast, the incident
light mode is a more reliable way of
producing well exposed pictures.
Reflected light method
For the reflected mode, the diffuser must be
shifted to the right. Care must be taken, that
the light measuring aperture is entirely free.
The measurement is taken from the position
of the camera towards the subject. In this
method, only the light reflected from the
subject is detected by the meter. Therefore,
the measuring values always depend on the
reflection capacity of the subject. As a result
of this, bright subjects are reproduced
darker and therefore not properly exposed.
Consequently, this mode is conveniently
used, when the suject does not show too
high contrasts between bright and dark
areas.
1.3 Duration of read-out in display
The Digisix will always display the last
function used. The meter does not
automatically switch off, as the power
consumption is extremely low.