Another thing is special, too: The TPP will be limited in numbers. Not for reason of simple sales tactics, but as a real limitation of glass supply. The backgroundis this: The extreme optical performance on Carl Zeiss Superachromat level, combined with a relatively high speed of 2.8, can be achieved only, when certain optical properties are maintained
with utmost precision. No manufacturer of optical glass can produce material within the extremely narrow tolerances required for the Tele-Superachromat T* 2,8/300. So Carl Zeiss had to purchase a
batch of glass, analyse its real properties with the ultra-high precision Carl Zeiss applies in the manufacturing of lenses for the semiconductor industry, do the optical design with these actual values and
prepare the manufacture accordingly. The quantity of optical glass purchased for the TPP project was based on Carl Zeiss’ assumptions on world market size for the TPP: estimated 400 (four hundred) sets of
optic – pretty audacious, as some of our partners think. 400 then is the ceiling. If portions of the glass batch turn out to be unusable – due to inhomogeneities or other faults – or lens elements have to be
discarded during manufacturing, the number will drop. Also, Carl Zeiss needs to keep several sets of optics as spare parts. Hence the maximum number of TPPs to find their way into customer’s
hands may be in the reg
Zitat von Bastl
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Alle abgeschlossen ! 
Ich fange dann mal wieder von vorne an ;-)
