Re: Wrong focal length with DA 17-70mm

2009-06-24 Thread Dario Bonazza

Thanks JoMac and Larry. So I see it's not so common, but it can happen.
Dario

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Re: Wrong focal length with DA 17-70mm

2009-06-22 Thread Larry Colen
On Sun, Jun 21, 2009 at 02:29:57PM +0200, Dario Bonazza wrote:
> Hi all,
> 
> I've used a DA 17-70mm which cannot communicate its proper focal length to 
> my cameras (K10D and K20D) when set below 35mm. E.g.: at 17mm, it says 
> 43mm. That's bad, both for flash coverage and IS. Is that fault common?

I had that same problem with my Tammy 18-250. I first noticed it as
displaying the wrong f-stop.


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Larry Colen l...@red4est.comhttp://www.red4est.com/lrc


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Re: Wrong focal length with DA 17-70mm

2009-06-21 Thread Joseph McAllister
Not on my version. Just ran a test for you, 10 focal lengths up to  
70mm, then back down to 17mm.  All showed up as advertised in the EXIF.


But I do have dust on the first interior lens group of my DA 18-250mm,  
from the mess the dogs make while running around in the dog park.  
Guess I'll have to send it in to Pentax when it gets bad enough to cut  
my contrast.



On Jun 21, 2009, at 05:29 , Dario Bonazza wrote:


Hi all,

I've used a DA 17-70mm which cannot communicate its proper focal  
length to my cameras (K10D and K20D) when set below 35mm. E.g.: at  
17mm, it says 43mm. That's bad, both for flash coverage and IS. Is  
that fault common?


Joseph McAllister
pentax...@mac.com

“ The early bird gets the worm, but the second mouse gets the cheese.”
— Kevan Olesen


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Wrong focal length with DA 17-70mm

2009-06-21 Thread Dario Bonazza

Hi all,

I've used a DA 17-70mm which cannot communicate its proper focal length to 
my cameras (K10D and K20D) when set below 35mm. E.g.: at 17mm, it says 43mm. 
That's bad, both for flash coverage and IS. Is that fault common?


Cheers,

Dario 



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