It used high class lenses, Scopar or Heliar, for the beginner's TLR. The early model of Brillant(German, means brilliant) was not able to adjust the focusing using the finder. They were set by scale.
Though the Brillant looks like a normal TLR, the view finder is different than usual in that has a big convex lens for the view screen in stead of normal ground glass. It is able to focus by viewing a center matte spot on the convex lens and it has a loupe in the hood. It has also a sports finder of Galilei type.

Voigtlander Brillant is very special camera, it has added accessory - an extinction meter to attach on the viewfinder lens. This kind of use of an exposure meter can be understood as a TTL measurement.
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