Vintage Lens:Sunny Day (Helios-103@F1.8) #dashcam #vintagelens #viaregia #helios #görlitz #zgorzelec
Channel: RP84
Date: 2024-01-19

What is this Helios 103 exactly?

A copy of the Summitar, a copy of the Sonnar and a new design from the Soviets. After a long search, I found a cross-section of this lens. Malcolm Taylor (Leica expert) told that it was actually a 3-1969 Leica Summicron version 79. According to Leica, no agreement has been reached. The Soviets just copied it without asking, or maybe the patent was over. They recalculated it to get f1.8 and match it with the glass the Soviets had access to.

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