The first version of the Aidex was introduced in 1922. It was produced only in 3 ¼" x 4 ¼" size and fitted with a Minex focal-plane shutter having a reduced speed range of 1/8 - 1/400. With its standard lens, a f4.5 Xpres, fitted it was a cheaper alternative to the Minex. This version is illustrated with 'barn door' flaps to hold the bellows and front standard rigid.

Around 1927 the second version was advertised, this had a Minex shutter with speeds of 1/8 - 1/1000. The 'barn doors' were replaced by a conventional fold-down bed along which the front standard can be drawn out. Lazy tongs connect the front standard to the camera body. Focusing is by worm screw and unusual scissor movement. This version was produced in 3 ½" x 2 ½" and 3 ¼" x 4 ¼" sizes the normal lens was an f3.5 Xpres. Although cheaper than the Minex few models could have been sold as they are not often found today. Neither version was advertised for long. The camera was normally supplied with a film pack adapter.