Last July, Rüdiger Neumann wrote:

> It is interesting, that the the new D2h uses the same AF pattern than the
> *ist/*istD.

New Nikon and Pentax AF systems are very very close aeach other, with the
same layout, the same 9 cross-type + 2 linear type sensors, arranged as
follows:

    +   +   +
|   +   +   +   |
    +   +   +

I couldn't find the AF sensitivity for the D2H, while the *ist D has EV 0-19
(at 200 ISO).

So, two months later, is anybody from Japan (or capable to read Japanese)
able to understand which of the two companies patented the 11-segment AF
system?

I searched US patent database and could only find the 6-segment MZS-type AF,
a newer version of which has been filed lately with No. 6618560:
http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/neta
html/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1=6618560.WKU.&OS=PN/6618
560&RS=PN/6618560

Any further info? In case, thanks for sharing it.

Dario Bonazza


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