FR 寫:
Actually if I am Zeiss, I would not even think about that for now ... People who are using Nikon DSLR that cannot support Ai-S lens are those that are D90 and lower, and these are most likely would not buy ZF or if they do, only limited amount of business. Compared to those using say D700, S5 Pro or D3 etc ..... And for those, the lack of a CPU is never a matter since the body support Ai-S.
As all business goes, money should be well spend on things that return, and re investing in production of the same lens in essentially the same mount to in a higher cost is simply faulted logic.
Sorry I do not agree fully, base on 3 reasons:
1) Inclusion of CPU contacts expands the market to D90 and beyond. Even though a lower percentage of user in that segment will opt for ZF lens, the base number of cameras is many times higher. In addition, a few ZF lens are not that expensive after all.
2) For people owning D300 onwards, CPU contact provides much better convenient and accurate metering capability, not to mention the availability of S mode. I never use P mode, but that's something extra as well. I believe many of us are getting annoyed with setting lens parameter after each change. There should be a number of D300+ users holding back the ZF option because of the lack of CPU contact. (me being one to hold back couple)
3) There is no guarantee when Nikon will give up the manual AI coupling altogether. (which I believe in not too distant future) When the time comes, the entire ZF line will be at risk.
The R&D cost of adding CPU contact is relatively low and given that it opens up a much bigger market, I don't see that it is a bad business case. Zeiss can start to add CPU contact to the existing line up and keep the customer base. It will be a win-win for all.
Just my two cents.