122°, wider than any SLR prime lens ever made, by taking additional advantage of aspherics and low dispersion glasses. [613] 1982 Ricoh XR-S  (Japan): first  solar powered  SLR. [614]  Was a  Ricoh XR-7  (Japan) aperture priority AE 35 mm SLR of 1981 modified with two silicon photovoltaic cells in the sides of the