Lens board

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A lens mount is an accessory for mounting lenses on large format cameras or running ground in photography.

Purpose

Large format lenses are not designed for use on a special camera. Most two-piece lenses are in the - built-in lens blanks by the board is bolted between the front member and the rear section of the lens - suitable for the particular type of camera. Most of the camera shutter is positioned in front of the circuit board and mounted if there is a central locking device. Some camera manufacturers (eg Sinar ) mount the shutter behind the lens. In older models, the closure was permanently installed in front of or behind the lens board; some cameras entirely renounced it.

Types

Almost every manufacturer has its own lens boards. The boards of Plaubel not fit into the cameras from Sinar and of Graflex not in the Linhof cameras. The latter even has different versions depending on the camera type and the recording format. There are versions in wood, plastic or metal. Modern lens boards are usually made ​​of aluminum. Some models are equipped with precision Einstellschnecken for focusing wide-angle lenses or delivered specifically in special sizes for adaptation to Weitwinkeleinstellgeräten.

Holes

Depending on the lock used the blanks with different, partly standardized, drilling will be offered. The most common drilling are:

  • Compur # 00 to 26.3 mm
  • Compur # 0 to 34.6 mm
  • Compur # 1 to 41.6 mm
  • Compur # 2 - 52.5mm ( several versions exist as Compur or Compur II II 5/2)
  • Compur # 3 - 65.0mm
  • Compound Dagor - 38.0 mm
  • Compound # 3 sleeve 7 to 63.2 mm
  • Compound # 4 sleeve 9 to 69.1 mm
  • Compound # 4 sleeve 10 to 80.0 mm
  • Compound # 5 sleeve 12 to 93.4 mm
Field camera
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