The Stereax is a stereoscopic camera folding plate, manufactured by Nettel Camerawerk in Sontheim, in southern Germany, from about 1909, and later by Contessa-Nettel. Nettel Stereax manufactured the two plate sizes; 4,5x10,7 cm [1] and 6x13 cm. Both have a focal plane shutter speeds up to 1/1200 second, that is autotapante (such as the Deckrullo-Nettel). 6x13 cm camera has a viewfinder frame folding wire; the smallest model has a foldable optical viewfinder (as McKeown [2]). 4,5x10,7 cm camera also has a front flap, that opens like a folding bed (but does not support the target table). A the like other chambers Nettel, focusing is performed by varying the length of the strut, but in this model, this is done by a knob on the standard lens, not in the camera body. Chamber 6x13 cm has the mechanism normal approach Nettel, with struts adjusted from the camera body, and with the end of a strut forming the pointer a scale of focus in a slot in the top of the chamber [2] the camera 6x13 cm can be arranged for panoramic images using the entire plate and stereo, and wire frames finder can be used for both formats. In its list as camera Contessa-Nettel (ie, after 1919), McKeown describes Stereax as a continuation of the Nettel Deckrullo Stereo, but both models appear to have been manufactured one by the side of the other so Nettel as Contessa-Nettel. The cameras were available with a range of different objectives, including Nettel own Anastigmats of Nettel in the period Nettel, and Carl Zeiss Tessars. Standard models were produced both coated leather black as tropical models [3] [4] [5].
