Gossen Starlite Manuel d'utilisateur télécharger pdf (Page 21)

GOSSEN Foto- und Lichtmeßtechnik 21

5.7 Taking measurements in the zone system

This function is mainly used to cope with subject

contrasts in the field of black and white photo-

graphy.

In addition to the influence of illumination, there

is a further possibility of optimizing the contrast

range of film and paper.

The zone system allows details to be reproduced

in the picture which otherwise would not be visible

and would be lost. A detailed analysis of this

technique would, however, go beyond the scope

of these instructions.

5.7.1 The Starlite and the zone system

The Starlite allocates different brightness ranges

to predefined graduated zones of grey.

Variations of these grey tones from the middle

zone determine the exposure correction and the

changes in the development process, which are to

be applied correspondingly.

Taking measurements in the zone system

For using the zone system activate the switch

DIP 4 in the battery compartment.

– Set the diffusor ring at the mesuring head to the

„reflected light – 1°“.

– Keep the left function button pressed and select

the sub-function ZONE using the setting wheel.

– Using the viewfinder, focus on the darkest spot

of the subject, which should still be shown up in

the negative.

– Press the measuring button . The meas. value

will then be automatically allocated to zone V.

– Using the setting wheel, place the measuring

value in the zone where the darkest value

should be, e.g. zone III.

– Now you can measure up to 8 further spots in

the subject using the measuring button –

the most important brightest spot, which should

still show detail in the negative, must be

included.

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Gossen Starlite Manuel d'utilisateur Page 21