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AUTOMATIC DIAPHRAGM PRESETTING DEVICE [1 record]

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Record 1 2011-06-21

English

Subject field(s)
  • Photography
CONT

The total magnification results from multiplying the lens magnification with that of the pocket telescope. The modern lenses the mounts of which offer the comforts of the pre-set diaphragm and the automatic diaphragm presetting device and additionally operate as a natural light trap, too, have, however, when used as a magnifier, a distance somewhat too large between front lens ...

Key term(s)
  • diaphragm setting device

French

Domaine(s)
  • Photographie
DEF

Dispositif qui autorise un automatisme du diaphragme lorsqu'on le déclenche.

Spanish

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