Zeiss had the goal of making it the best made 35mm camera, and many longtime Contax users consider the heavy duty and complicated construction the high point of Contax Rangefinders. The consequences of the Nikon S camera being 0. Nikon used brutally chromic acid tanned leather on the Nikon S. Contax bodies and lenses sell generally sell for much less than their contemporary Leicas. Batches of serial numbers were apparently assigned to the production department in Carl Zeiss, Jena in sequence order. All trademarks and brands belong to their respective owners.
If a lens made for the Contax , such as a 1960's Carl Zeiss 50mm f1. If the numbers are different, this indicates that the back was replaced or mixed up by some one with access to more than one camera time in the past. Biometar 1971 After that the lenses were designed all in black, with a diamond or pyramid-shaped pattern on the focussing ring, but a bright metal front edge to the focussing ring. This is fascinating — or frustrating! The base plates shows the exact field which would be in picture. That presumably is part of a microscope or projector, at any rate a segment of the illumination path of a optical instrument a collector is used to feed lamp light into a condenser. The mechanical condition depends on whether the lens has been looked after or badly-treated by a previous owner — for instance, if it has been dropped or taken apart by someone who does not understand lenses. Today chromic acid tanned leathers are very carefully rinsed and treated to neutralize the chromic acid.
Today there are two main methods used industrially: These are the Vegetable and Chromic Acid methods. However, as will be obvious from the preceding paragraph, sometimes even after a new design was calculated, the lens continued to be manufactured to the previous design, and sometimes even after batches made to the new design were produced, some subsequent batches were made to the previous optical design. Most Zeiss lenses other than the 1000mm mirror lens had the same design style, so when changes of styling were introduced, they were phased in to all other Zeiss lenses except the mirror lens. While offering ground glass viewing, focusing was not really necessary -- just attention to use the right adapters with the right baseplate. You are most welcome to for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more. The photographer's choice said as much about their personality as it did about their photography.
Though Leica switched to a grey paint finish during the war to save chromium, strangely enough the more heavily chromed Contax did not. However serial numbers, the other major European manufacturer, have been posted by. If a lens made for the Nikon S, such as a 1960's Nikkor 50 mm f1. It does seem that very low numbers do exist, and it is suggested that they begin at Jena at 1,000 in about 1890, unless information to the contrary is found. Focus seems to work fine still though - are they supposed to do this or is this a bit of a fault? Meter coverage roughly equaled the 50mm field of view.
This is one of the last Biometars produced. The very front ring, with the thread to accept filters, also now had a black front edge. If you want one as a reliable shooter, think again. Serial numbers Fortunately, it is possible with the help of the serial number to date most of the lenses that Carl Zeiss, Jena produced and there is a book that gives detailed information on the date of design and manufacture of Carl Zeiss lenses, based on the serial number. Dalat's comment that it of course can't compare with any modern binocular is perhaps too sweeping I guess you are right here. While Leica remained relatively intact after the war, Zeiss postwar recovery was made infinitely harder by being split into two separate competing West and East German companies. It was a success Zeiss would not enjoy after W.
The camera body itself is very fine and shows very high quality of workmanship and materials. Yes you can eventually find a replacement, but be aware that the camera is indeed supposed to have a film take-up spool. The newer looking, the better. However, in spite of details of this nature, serial numbers are a good guide to the age of a lens. I say brutally chromic acid tanned because the tanning method use is uniquely bad; and not only this it is toxic to people who were unfortunate enough to touch it.
If you find something which you find of questionable validity, please do not hesitate to contact me. Be aware though, that the only place you will get a replacement finder is from another Contax body. Nevertheless, even after this date most of the 80mm Biometars produced were to the original calculation. The following is a collection of serial numbers for large format lens manufacturers. I haven't counted the iris blades, but there are enough of them so the aperture hole is nicely round and very circular.
Accounts vary as to the exact end of production date which was caused by primarily by war damage, material shortages and shifting priorities. With this center filler element two air refractive surfaces would be removed from the lens. Attila Joined: 24 Feb 2007 Posts: 58153 Location: Austria,Hungary Expire: 2016-11-18 Posted: Sun Feb 22, 2009 9:55 pm Post subject: Attila wrote: Welcome! Hello Klaus, Could you help date Carl Zeiss Jena microscope objectives, and microscopes? Nice review Dalat - and that info on different Dialyts will come in handy Renze, thanks all : Lenses were dirty so gave them a clean, coatings intact though it looks like one of the objective lenses is separating a bit. In it, the 80mm Biometar and the 65mm Flektogon have the plain alloy finish with the leather focussing band as in the first image above , while the 50mm Flektogon, the 120mm Biometar and the 180mm Sonnar have black rings for the focussing and aperture markings, with the bumpy black plastic focussing ring and light alloy aperture rings as in the third image above. With that odd mix of typographies I suspect a late wartime product, when production had been relocated to other companies and underground facilities, utilizing whatever tools were at hand. Recently I emailed Zeiss about the age Serial 897889 and the answer was 1972. Pentacon Six brochures produced in 1966 and 1967 show lenses with this finish.