Xpres - Antique and Vintage Cameras

Xpres

1913

Ross Ltd

London

England

Image of Xpres

f4.5, 7 "

Lens Type:
Anastigmat, modified Tessar. 5 elements.

Iris diaphragm to f32. Sunk mount. For half-plate.

Serial Number:
86423 (c. 1919) .

f4.5, 8 "

Lens Type:
Anastigmat, modified Tessar. 5 elements.

Iris diaphragm to f45. Coated.

Serial Number:
238080 .

The Xpres, designed by J. Stuart and J.W. Hasselkus, was a general purpose fast lens. Unlike the Tessar it has a rear group of three elements. When first introduced the aperture was f4.5, a fast lens for the time, the focal length ranged from 4 - 12". Later, shorter lenses were introduced and the range extended to 21". In 1925 the f3.5 series was introduced for still and cine in focal lengths up to 10" and in 1927 the f2.9 series appeared. An f1.9 version was introduced in 1929 for cine and small hand cameras. The Wide-Angle Xpres (BP 295519, late 1920s) was a different construction. A process Xpres was also produced.

References & Notes:
BP 29637/1913. BJA 1915, pp. 20, 545. BJA 1917, p. 12. BJA 1926, pp. 3, 304. BJA 1927, p. 341. BJA 1928, pp. 3, 335. BJA 1930, p. 357. Neblette, Principles and Practice 133. Kingslake, p. 89.

Lustrar

Wray (Optical Works) Ltd

Bromley

England

f4.8, 135 mm

Lens Type:
Anastigmat.

Coated. Iris diaphragm to f32.

Serial Number:
80005 .

With:
Mounted in Epsilon shutter speeded 1 - 1/200, B, T.


Company Details:

Ross

Wray

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