Trona

1926

Zeiss-Ikon A. G.

Dresden

Germany

Lens:

f4.5, 10.5cm Tessar, iris diaphragm to f45. Serial no. 770050 (1927).

Shutter:

Dial-set Compur, speeded 1 - 1/250, B, T. Serial no. 146922.

Construction:

Leather covered body, leather bellows.

Format:

6.5 x 9 cm plates held in single metal slides.

Focusing:

Bellows to 16". Infinity lock. Double extension.

Attributes:

Brilliant view-finder, frame view-finder. Clips on bellows to prevent sagging.

Movements:

Rising front, cross front.

Serial Number:

M62534 (1927) .

Notes:

ZI model no.: 665/2 - slides.

With:

Hooded focusing screen.; 5 single metal slides.

The Trona, originally produced by Ica, was available in 6.5 x 9 cm, 9 x 12 cm and 3 ¼" x 4 ¼" sizes. Various lenses were available, later models have Rim-set Compur shutters.

References & Notes:

BJA 1925, p. 705.; BJA 1926, p. 759.; BJA 1928, p. 680.; BJA 1930, p. 659.; ZI Cat. 1930, p. 32.; ZI Cat. 1936, p. 61.

Early Photography