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Moin moin,
bis vor kurzem dachte ich, die T Vergütung wäre eine Entwicklung von Zeiss/Oberkochen. Jetzt hab ich aber gesehen, dass es auch Zeiss/Jena Objektive mit T Vergütung gibt. Zwei davon hab ich gerade im Zulauf.
Weiss evt. jemand mehr über das Thema? :beten:
-urm
T* ist Multicoating von CZ West.Zitat:
Zitat von urmelchen
Zum Thema "T" habe ich englischen Text gefunden: (Quelle hier)
Zitat:
The German patent for lens coating was registered by Alexander Smakula of Carl Zeiss Jena in 1935, issued in 1937, and published in November, 1944 - indicating that it was kept as a secret until it had become clear that the allies were capable of producing coated lenses as well as their axis counterparts; there are rumours on the net that lens coating had been invented earlier (by simply tarnishing lenses on the air or immersing them in calcium salts as this had been known since the turn of the last cerntury), and that viable coating had been invented by the Carl P. Goerz factory in Berlin for their field glasses, but I have not seen proof of the latter; obviously a similar invention had been made in the U.S. in the mid-thirties, I have seen a document about that but keep forgetting the name of the inventors. Japanese periscopes are also being said to have been coated prior to WWII, but I have also not seen any documents.
As far as CZJ is concerned, coated and uncoated lenses were produced during the pre-war period and wartime, and there is much in favour of the theory that coated lenses were primarily sold to the military and to researchers; at least my issue of "Neue Foto Schule" by Hans Windisch, a very detailed book for the amateur market, does refer to light loss along reflecting surfaces, but not to lens coating at all as late as 1940, and CZJ advertising from the 1930s and early 1940s does not, either.
By the end of WWII it was clear that lens coating would be available to anybody wanting to put some effort in the issue - and that the CZJ patents would not be of much interest in an occupied country; I have often heard the claim that every lens leaving the CZJ plant after WWII was coated (this issue would still have to be settled in my opinion, circumstances seem to have been rather chaotic, serial numbers from some 2.700.000 were in disarray, coated lenses were not always marked with the red "T", uncoated lenses were coated after-market - we will probably never know).
Welche?:sensationZitat:
Zitat von urmelchen
Danke für die Infos. Jetzt bin ich schon etwas schlauer.Zitat:
Zitat von praktinafan
Im Zulauf sind ein Triotar 4/135mm T und ein Tessar 2,8/5cm T
Habe ich auch zweie von... Ist eine grundsolide und gute Optik! Nur nicht so schnelle (f4). Leicht zu warten und klasse zu saeubern!!! Gefaellt mir sehr sehr gut!! Dieser Alu-Klotz ist wirklich schoen!!!Zitat:
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kenn ich leider nicht...Zitat:
Zitat von urmelchen
LG,
Klaus
"T" Vergütung gab es schon vor der Trennung von Zeiss.
Daher durften beide es weiterverwenden.
Seltsam ist warum CZJ dann in späteren Jahren, auf die Flektogone etc. MC schreib und nicht TZitat:
Zitat von LucisPictor
Hat wohl was mit Markenrechten zu tun...
Es gab ja auch später keine "Sonnare" oder "Tessare" mehr sondern nur noch "S" und "T". ;)
Und "B", "Bm", aber nur im Export (West)! Das T hat also rot zu sein, also T
Die Farbe ist sehr wichtig! Frag mal die ganzen L-Fans im DSLR-Forum... ;)