Dating rolleiflex camera Chat with bengali boudi

17 Dec

The Rollei 35, a masterpiece of the genial engineer Heinz Waaske, who designed it between 19, is an all metal little gem of micro-mechanics that, at the time, stunned by the extraordinary compactness, although obtained by sacrificing the rangefinder, combined with extremetely guessed aesthetic solutions that made him a true object of design; built with the ruggedness and accuracy typical of the House, it made use of the best german know-how in related fields: Franke & Heidecke mechanics, Gossen light meter, Deckel Synchro-Compur shutter (wonderfully miniaturized) and Carl Zeiss Oberkochen lens: what we could ask for more?

The Tessar 40mm f/3,5 coupled with this camera was first produced by Zeiss Oberkochen (as the example shown, with its congruent serial number); the Tessar 40mm lens from Carl Zeiss equipped all the exemplars Made in Germany and, till the end of the available stocks, even those made in Singapore; since then, the Rollei obtained from Zeiss the grant to produce the lens by itself, with identical specifications, and it was thereafter marked Tessar Made by Rollei.

TESSAR 21cm f/4,5, TESSAR 13,5cm f/6,3, ANASTIGMAT 110mm f/8, APO-TESSAR 30cm f/9, TESSAR 40mm f/3,5, TESSAR 23mm f/2,8, TESSAR 105mm f/3,5, LUMINAR 16mm f/2,5 e 25mm f/3,5, SONNAR 2,5cm f/1,4, APO-GERMINAR 375mm f/9, DOKUMAR 47mm f/5,6, BLASENKAMMEROBJEKTIV ZEISS JENA 39mm f/8, BLASENKAMMEROBJEKTIV ZEISS S-DISTAGON f/11, P-FLEKTOGON 35mm f/2,8, JUSTIER OPTIK JO-1 14mm f/14, S-PLANAR 120mm f/5,6 in M46x1, S-PLANAR 25mm f/1,6 4050A, S-PLANAR 50mm f/1,6 4360 A, S-PLANAR 95mm f/2,1 4360 A, UV-PLANAR 60mm f/4, S-DISTAGON 27-32mm f/1,5 T*, MIROTAR 500mm f/4,5, N-MIROTAR 210mm T= 0,03, TELE-TESSAR 500mm f/8 AND SPIEGELOBJEKTIV 500mm f/4.

10/12/2012 (UPDATED 04/02/2015) This article required a lot of preliminary job for researches as well as acquisition of unusual pieces, in some cases expensive, and I want to consider it a sort of Christmas gift dedicated to my many friends and enthusiasts of this topic.

It's interesting to note that, despite the destination to a mid-range unit, this Tessar is designed without skimping on the endowment of modern optical glasses; in particular, the first and the last lens are made with lanthanum Flint optical glasses of Schott La F3 and La F2 class, while many Tessar lenses designed in the previous decades, and also intended for prestigious equipment, did not avail themselves of Rare Earths materials.

The dimensions shown in the patent (diagonal field of 56 and f/3,5) perfectly match the characteristics of the production model.

It 's interesting to note that the objective is engraved as an f/4,5, while the original patent relates to an f/5,5 ...

If we consider that the maximum aperture of the iris has a diameter of about 39mm, the latter would correspond to geometric aperture of about f/5,4, corresponding to the patent data but not to the official ones...

The following image was realized precisely with this lens, used at full aperture f/8.The diagram summarizes the original f/2,8 Tessar patent, signed by Merte and Wandersleb, with its geometrical parameters and the characteristics of the involved optical glasses.The fertile progeny of the Tessars, over time, has ennobled also mid-low range cameras, sharing with these bodies - rated to budget - the outstanding relationship between quality and production cost typical of this formula; in this regard, two good examples are represented by the Carl Zeiss Tessar 40mm f/3,5 for the Rollei 35 and the Tessar by Rollei 23mm f/2,8 for the the Rollei E110 (and their versions 35T and A110): the first for the 135 and the second for the 110 film format.The various components disassembled and displayed in sequence; note how the iris diaphragm, comprising 10 blades and nearly round, appears partially closed even at full aperture, a solution that reduces the inner flare; also the black matt passivation of the blades is a truly actual solution which, curiously, was not present in much more modern lenses, such as the Zeiss for Hasselblad and Contarex of the '60s, equipped with diaphragms shining like mirrors ...In an effort to correct the spherical aberration and improve the flatness of field, in 1893 was also introduced a Protar version with the latter group consisting of 3 glued lenses instead of 2 (Series IIa, Zeiss diagram n 008), then produced in 90, 110, 136, 167, 205, 244, 295, 350 and 433mm focal lenghts; the rear glued triplet solution will be then evoked by one of the rarest and most famous lenses in history, the Leitz Anastigmat 5cm f/3,5.