GOI Helios-81 2/52.4mm prototype *
Startpreis
6.000 €
Gebote: 0
12.000 – 14.000 €
Versandnformation
Around 1956, the GOI factory developed several fast standard lenses in parallel, including the Orchidea-1, Mercury-1, Helios-65 and Helios-81, intended for both M39 FED rangefinder cameras and M39 Zenit SLR cameras. All were produced in extremely small quantities.
The present Helios-81, with a focal length of 52.4 mm, is of particular interest. To our knowledge, no other example is known today, and it is not documented in the “GOI Blue Book.” It is therefore very likely a previously unrecorded prototype, albeit a fully finished and completed lens.
The lens is fully functional and optically as well as mechanically matched to the requirements of Zenit M39 SLR cameras. The focusing scale engraved in the opposite direction provides further indication of its prototype and experimental character.
Included in the lot is the original folder from the GOI development department containing technical measurements and optical calculations relating to this lens, further documenting its experimental origin.
An exceptionally rare GOI prototype.