70–210mm · f/4
The Yashica ML 70-210mm f/4 is a rare, heavy lens (over 1 kg) with an 8-blade diaphragm, rumored to be related to the Vario-Sonnar 70-210/3.5. Optical strengths include good color rendition (F16SUNSHINE). Weaknesses are not explicitly noted. Build is solid but heavy; handling is typical for a manual zoom. It suits collectors and those seeking a fast, all-metal telezoom, though scarcity may limit practical use.