Solagon 50mm, f2.0 is a typical double-gauss lens designed and manufactured by AGFA.
Some later models are "Color-Solagon"s. It is a hign-ended lens of agfa lines, appeared firstly on the SUPER-Silette 2.0,then karat 36 and karat-Ⅳ. Its performance is great, even compared with Schneider-xenon 50mm, 2.0 and Ultron 50mm, 2.0. Later, the 55mm 2.0 solagons were fited on the AmbiFLEX/Agfaflex.
But the 70's Solagons were oemed by some Japanese companys.