From the "existing art" section of the controller patent, it seems that 
the PZ lenses already use a two-way data link.

The new patent application seems to be just an extension of 
functionality of the existing KAF2 mount; it may not physically be a 
new mount -- IF TRUE, this would mean that the MZ-S (and others?) could 
be capable of using the new lenses either straight off or after a 
software upgrade. ;-) ;-) ;-)

--
Kristian

On Saturday, Aug 31, 2002, at 13:08 Europe/Dublin, Kristian Walsh wrote:

> Hi,
>
> All the pieces required to digitally control a USM or IF lens are 
> already in place in the K-AF2 mount. The power contacts for PZ lenses 
> are present, and there is already a data link between lens and body 
> (for MTF/focal-length/focus-point info from FA
>  lenses). It is conceivable that this could already be a two-way 
> connection, or that we're going to get just another contact on the 
> existing mount for body-to-lens transfers
>
> --
> Kristian
>
>
>
> On Saturday, Aug 31, 2002, at 09:57 Europe/Dublin, Lawrence Kwan wrote:
>
>> On Fri, 30 Aug 2002, Alan Chan wrote:
>>>> From: Henry Chu <[EMAIL PROTECTED]>
>>>> I think Pentax did try to their best maintain the K-mount but they 
>>>> have
>>>> admitted defeat finally.  That's why suddenly they decided to carry 
>>>> out
>>>> so much R&D effort to move forward.
>>
>> On the contrary, the patent described a lot of details in backwards
>> compatibility of KAF mount lenses.  So it looks more likely to me 
>> that it
>> is a evolution of the K mount.
>>
>>>> BTW, there is one more patent application I found relating to the
>>>> proposed convertor for the new lens mount to the existing mount:
>>
>> There is also a description of a "rear converter"; could this be the 
>> image
>> stabilization convertor for existing lenses?
>>
>>>> No. 20020118963 Camera system having a communication system between
>>>> a camera body and a photographing lens
>>
>> The main function for this patent is the control of image stabilized
>> lenses.
>> On related notes, there were also recent patents of image stabilized
>> binoculars, mirror box design for digital SLR and camera
>> controls/interface on the back cover of the camera.
>>
>>
>> -- 
>> --Lawrence Kwan--SMS Info Service/Ringtone Convertor--PGP:finger/www--
>> [EMAIL PROTECTED] http://www.vex.net/~lawrence/ -Key ID:0x6D23F3C4--
>>
>

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