catflap.org Online Dictionary Query

  natural diaphragm /nˈatʃəɹəl dˈaɪəfɹˌam/
  natürliche Blende
   see: diaphragm stop, lens stop, diaphragm, stop, diaphragm stops, lens stops, diaphragms, stops, aperture diaphragm, aperture stop, field stop, flare stop, focussed diaphragm, focused diaphragm, Hartmann diaphragm, critical diaphragm, critical aperture, lamellar diaphragm, iris diaphragm, pinhole diaphragm, pinhole, pseudo-lens, telecentric stop