Large format lens

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Large format lenses are photograpic optics that provide an image circle large enough to cover large format film or plates. Large format lenses are typically used in large format cameras and view cameras.

Photographic optics generally project a circular image behind the lens. On smaller format cameras the image circle generally covers only the intended film size with little room to spare. Large format lenses are an exception. For large formet use the circular patch of image light usually extends beyond the minimum size circle needed to fully cover the rectangle of the film. The extra image offers some or a great deal of room to spare since large format cameras usually make use of camera movements that re-align the lens away from dead center on the film. The film is often positioned as far off center as just inside the periphery of the image circle.

The "movements" of a large format camera allow unique control of the plane of focus and of perspective. Large format optics are designed to allow the camera to take fullest possible advantage of movements.

A full description of the uses and purposes of camera movements is at View Camera Movements

The major design for large format lenses are:

Contents

[edit] Wide Angle

[edit] Hypergon

  • Zeiss Series V Protar
  • B&L Protar
  • Goerz/Zeiss Hypergon 6in/150mm

[edit] Topogon

  • Bausch & Lomb: Metrogon, Process Anastigmat
  • Boyer: Perle
  • Busch: Omnar
  • Dallmmmeyer: Wide-Angle Anastigmat
  • Goerz: Geotar, Rectagon
  • Ilex: Anastigmat Series D
  • Kodak: Wide-field Ektar
  • Meyer: Aristostigmat
  • Rodenstock: Eurynar, Luminar, Ronar
  • Ross: Homoentric
  • Schneider: Isconar
  • Wollensak: Wide-angle Raptar
  • Zeiss: Kekla

Most needed central filter to minimise the effect of light loss to the edge.

[edit] Hologon

  • super angulon

Got other design like XL.

[edit] Biogon

[edit] Dagor

Good for larger than 4x5. WL alternative design.

[edit] Super Symmar Xl

  • Zeiss: Orotho-Protar
  • Statz Anastigmat Series VI
  • Schneider: Angulon

[edit] Normal

[edit] Basic Design

Zeiss Anastigmat Zeiss Tessar

  • Berthiot: Flor, Ilor
  • Boyer: Saphir
  • Busch:Glyptar
  • Dallmeyeralmac, Perfac, Serrac
  • Erenmann: Ernon
  • Hermagis: Hellor, Lynx
  • Ilex: Paragon
  • Kodak: Ektar
  • Laak: Dailytar
  • Leits: Elmar, Varop
  • Meyer: Primotar
  • Playbel: Anticomar
  • Rodenstock: Ysar
  • Ross: Xtralux
  • Roussel: Stylor
  • Schneider: Comparon, Xenar
  • Tayer-Hobson: Apotal, Ental
  • Voigtlander: Heliostigmat, Skopar
  • Wollensak: Raptar
  • Wray: Lustrar

Some has apo for controlling the chromic abrreviation

[edit] Heliar

[edit] Sonnar

[edit] Artar

always come with apo-artar and very very sharp. Very famous make like kodak ektar 203mmf7.7.

[edit] Planar

  • Agfa: Soligon
  • Angenieux: S-type
  • Astro: Kino, Tachar
  • Bausch & Lomb: Aminar, baltar, Raytar
  • Boyer: Saphir
  • Dallmeyer: Super Six
  • Enna: Annaston
  • Isco: Westagon
  • Kinoptik: Apochromat, Fulgior
  • Kodak: Ektar, Aero Ektar
  • Leitz: Elcan, f/1.2Noktilux, Sumarrit, Summar, Summitar, Summicron, Dygon
  • Domiron
  • Rodenstock: Heligon
  • Ross: Xtralux
  • Schneider: f/2 Xenon, Xenogon
  • Steinheil: Quinon
  • Taylor-Hobson: Amotal, Ivotal, Kinic, Opic Panchrotal, Speed Panchro
  • Wollensak: Raptar
  • Wray: Copying Lens
  • Zeiss: Biotar, Flexon

Not important for b/w where contrast is more important than resolution. This design is very important for colour photos a, as it has beeter resolution. Good examples are apo-symmar and apo sirona or more coverage such as super symmar hm

[edit] Tele

Very seldom and possibly mainly Tessar

[edit] Others

One special rare earth (with radioactive features) is Apo Lanthar. So is Kodak's Areo Ektar.

  • M-Componon
  • Tele-Arton
  • Tele-Xenar
  • Xenar
  • Xenotar

[edit] External links

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