I wouldn't be too sure about that.  The 645 was much more of a field 
camera, (in fact the 67 was more of a field camera), and the digital 
version, will be one as well.  Studio cameras tended to have removable 
backs, and digital studio cameras tend to be tethered.  I think many 
users will be looking to use this camera for high quality nature 
photography.

Paul Stenquist wrote:
> Doesn't much matter. Anyone who uses 67 lenses with a 645D will 
> probably be using it in the studio or on sticks for a location shoot.
> Paul
> On Feb 27, 2007, at 8:01 PM, P. J. Alling wrote:
>
>   
>> I do, as Pentax uses as many systems across camera lines as possible to
>> keep costs down.  The metering and auto focus electronics in the 645n
>> were probably, (I only say probably since I've never taken either 
>> camera
>> apart, though if someone would like to send me a 645n to sacrifice I'll
>> be happy to compare it's electronic guts to my not economically 
>> feasible
>> to repair MZ-3), the same modules as those in the MZ/ZX-5n.  I expect
>> the 645D to share the autofocus electronics and metering with the K10D.
>> If they do that, and I have every confidence Pentax will, full aperture
>> metering with 67 lenses is dead as the dodo.
>>
>> Thibouille wrote:
>>     
>>> Ah I didn't know. That said, I don't expect Pentax to drop support for
>>> this in their Pro line.
>>>
>>> 2007/2/27, P. J. Alling <[EMAIL PROTECTED]>:
>>>
>>>       
>>>> All 645 lenses are A lenses and are electronically identical to to 
>>>> the
>>>> Pentax Ka lens mount.  There is no 645 equivalent to a K lens but I
>>>> would expect that the 67 lenses would fill that niche.  Remember Ka
>>>> lenses are supported by all Pentax K DSLRs but using the aperture 
>>>> ring
>>>> for full aperture metering isn't.
>>>>
>>>> Thibouille wrote:
>>>>
>>>>         
>>>>> If the adapter provides the linkage then 645D should meter normally 
>>>>> IMO.
>>>>> Pentax stated that 645D is compatible with all 645 lenses and the
>>>>> DFA55 is announced as being compatible with previous 645 bodies (and
>>>>> it has an aperture ring).
>>>>>
>>>>> So it should (hopefully) be OK.
>>>>>
>>>>> 2007/2/27, Mark Roberts <[EMAIL PROTECTED]>:
>>>>>
>>>>>
>>>>>           
>>>>>> P. J. Alling wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>             
>>>>>>> Mark Roberts wrote:
>>>>>>>
>>>>>>>
>>>>>>>               
>>>>>>>> Paul Stenquist wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>                 
>>>>>>>>> On Feb 27, 2007, at 3:58 AM, Thibouille wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                   
>>>>>>>>>> Mmm BTW do 67 lenses provide mecanical coupling when
>>>>>>>>>> used on 645 with adaptor or one you them like M42 on K body ?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>                     
>>>>>>>>> When used on the current 645, using a 67 lens would be akin to
>>>>>>>>> using an M42 lens on the Pentax digitals.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                   
>>>>>>>> A little better than that: The 67-645 adapter does provide
>>>>>>>> automatic diaphragm actuation and open aperture metering. At
>>>>>>>> least according to the Pentax literature. I'd love to buy one of 
>>>>>>>> the
>>>>>>>> things if I could ever find one.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>                 
>>>>>>> But will it offer open aperture metering on the 645D?
>>>>>>>
>>>>>>>
>>>>>>>               
>>>>>> Impossible to say without having a 645D to play with, don't you 
>>>>>> think?
>>>>>> But I'd be surprised if it didn't.
>>>>>>
>>>>>>
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>>>>>> http://pdml.net/mailman/listinfo/pdml_pdml.net
>>>>>>
>>>>>>
>>>>>>
>>>>>>             
>>>>>           
>>>> --
>>>> Entropy Seminar: The results of a five yeer studee ntu the sekend lw 
>>>> uf thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot.
>>>>
>>>>
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>>>>
>>>>         
>>>
>>>       
>> -- 
>> Entropy Seminar: The results of a five yeer studee ntu the sekend lw 
>> uf thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot.
>>
>>
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>>     
>
>
>   


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thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot.


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