miranda produced early slrs in the 1950s which were initially manufactured with external auto-diaphragms, then added a second mount with internal auto-diaphragm. to list some of miranda's cameras with external diaphragm, there was the miranda sensorex line. the internal auto-diaphragm miranda cameras consisted of the miranda 'd', the popular miranda 'f', the 'fv' and the 'g' model, which had a larger than normal reflex mirror thereby eliminating viewfinder image vignetting when the camera was used with long telephoto lenses. miranda cameras were known in some photographic discussions as 'the poor man's nikon'.