Zeiss Ikonta 521 6 x 4.5 folders aren't very trendy, maybe because they seem too far removed from what most people think of when they think of film cameras these days. Lacking in amenities compared to more modern cameras, they're equipped with folding optical finders (no focus aids), film advance and shutter-cocking are separate operations, and there's not so much as a rapid-wind lever in sight. But that also makes for a very compact camera, and compared to operating a view camera, they're models of convenience and simplicity.