Well...2 great Pentax cameras in a row...i guess it was too perfect to be 
true...

But at least this time, if (when) you get the good one, you get a performance 
leader in its category !

Regards,
Jaume



----- Mensaje original ----
> De: Boris Liberman <[email protected]>
> Para: Pentax-Discuss Mail List <[email protected]>
> Enviado: mar,16 noviembre, 2010 16:27
> Asunto: Re: It's my Pentax lucky streak again
> 
> Quoting from here:
>http://www.luminous-landscape.com/reviews/cameras/pentax_645d___a_first_review.shtml
>l
> 
> --  start quote #1
> An annoying mechanical fault
> 
> About a week after the  645D arrived, I began to notice the rear control dial 
>acting strangely.  Whichever way it was turned, it would increase the value 
>being effected, often  in multi-increment leaps.  Over time, the problem has 
>gotten worse, to the  point that the rear-dial is now essentially unusable. 
>Want 
>to get to ISO 1600 in  a hurry, or +5 stops exposure compensation? This is 
>your 
>ticket.   Otherwise, not too good. Fortunately, the 645D is so 
>user-configurable, that I  have simply put ISO on the front dial in Program 
>mode, and switch it there, but  shoot most of the time in physical aperture 
>priority using the aperture rings on  the older FA lenses.  This is a passable 
>work-around, but obviously the  camera is mechanically defective and needs to 
>be 
>repaired.  Pentax Canada  and USA have only just ordered their toolkits for 
>645D 
>repairs, so it is unclear  how and when this will get done.  Service is a very 
>significant component  in the pro-level camera equations.  More to come on 
>this 
>in future updates  to this review.
> 
> At this point, I have not heard of any other users  encountering this 
>particular problem, so unless my inbox is flooded with reports  of similar 
>problems, I will assume it is unique to my camera.  These things  happen. Make 
>5,000 of anything, each with thousands of parts, and something is  bound to 
>break.  Still, this is very unfortunate. I have to say that the  defect caused 
>me some real cognitive dissonance, given the quality build-feel of  the 
>camera.  
>Time will tell how reliable the 645D proves to be.
> -- end  quote #1
> 
> -- start quote #2
> UPDATE:
> 
> Shortly after this review  was published, I received an email from a 
>photographer in Sweden who has  experienced exactly the same dial-failure with 
>the 645D. One is a fluke, two is  a pattern. Perhaps by coincidence, I also 
>learned from three different sources  around the same time that the first 
>shipment of 645Ds had reached Australia and  Canada, but was recalled 
>literally 
>from the dealers' hands due to some sort of  defect identified by Pentax.  It 
>appears that replacements are anticipated  shortly, so this does not appear to 
>be a systemic issues (a la M8 IR  sensitivity) and may just be batch-related, 
>but who knows. I am glad Pentax is  taking QC seriously, and look forward to 
>more information becoming available on  this.
> 
> November 14, 2010.
> -- end quote 2
> 
> On 11/16/2010 5:04 PM,  Ralf R. Radermacher wrote:
> > My dealer exchanged my first K-5 today  because of a stabilizer problem.
> > Just tested the new one. The rear  thumbwheel is erratic. Didn't need
> > much explanation, though. He has the  same thumbwheel trouble with his
> > private K-7.
> > 
> >  Fortunately he has enough K-5 in stock, so we should be fine for a few
> >  more exchanges.
> > 
> > All of my Pentax DSLRs (DS, K10D, K-7) have  been exchanged at least
> > once. With all due respect, Pentax, your Q.C. is  a mess.
> > 
> > Ralf
> > 
> 
> 
> -- PDML Pentax-Discuss Mail  List
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