I should add that if there is any way that you can "swing it" THE
ultrawide lens to get (IMHO) is the Sigma EX 10-20mm f4-5.6. It is
responsible for almost all of my favorite images. I got mine used for
$350 from a Craigslist seller and it is a good one. B&H has it NEW
right now for little more than that:
http://www.bhphotovideo.com/c/product/413425-REG/Sigma_201109_10_20mm_f_4_5_6_EX_DC.html
One sold on Pentax Forums marketplace a month ago for $250 australian
(which is $199 USD... makes paying the extra shipping worthwhile!)

If you want to see samples of what it can do:
https://www.flickr.com/groups/sigma10-20/pool/
or
http://www.pentaxforums.com/forums/122-lens-clubs/84539-sigma-10-20mm-club.html

If something happened to mine I would be suicidal. :)



On Tue, May 12, 2015 at 11:33 AM, Eric Weir <[email protected]> wrote:
> Thanks, Matthew. That’s very helpful.
>
>> On May 12, 2015, at 12:22 PM, Matthew Hunt <[email protected]> wrote:
>>
>> On Tue, May 12, 2015 at 11:48 AM, Eric Weir <[email protected]> wrote:
>>
>>> So, should it be the 16-45 or is there something else I should consider.
>>
>> I had a used copy of the 16-45, and I found it to be a very good
>> value, and I liked the 16mm wide end. But before too long, my copy
>> became decentered, so the right edge of the image was very soft. I
>> recently met up with PDMLer Zos Xavius, and he said that he had two
>> copies of the lens that developed similar issues. So I'm not a fan of
>> the build quality of the lens.
>>
>> I just replaced it with a new Sigma 17-70mm f/2.8-4 Contemporary,
>> which is on sale for $399. So far I like the new lens; it's a bit soft
>> at the edges at 17mm (worse than my Sigma 10-20mm f/4-5.6 at 17mm),
>> but respectably close to my FA 50mm f/1.4 at 50mm, and sharper than my
>> Tamron 70-200mm f/2.8 at 70mm. The reach out to 70mm is nice.
>>
>> There is one thing to know about the Sigma, though: It had a firmware
>> bug that mis-reported the focal length to the camera at the wide end,
>> causing the shake reduction system to operate incorrectly. This bug
>> has been fixed, but you might get a lens with the old firmware, and
>> you would have to either send it to Sigma or buy the Sigma USB dock
>> ($60) to update the firmware. (I just sent my copy to Sigma yesterday.
>> I was going to buy the USB dock, but the pop-up flash button fell off
>> my K-5 II, so I decided to send the camera to Pentax and the lens to
>> Sigma at the same time.)
>>
>> http://www.pentaxforums.com/articles/pentax-related-news/sigma-addresses-17-70mm-shake-reduction-issue.html
>>
>> --
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>
> ------------------------------------------------------------------------------------------
> Eric Weir
> Decatur, GA  USA
> [email protected]
>
> "Our world is a human world."
>
> - Hilary Putnam
>
>
>
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-- 
Life is too short to put up with bad bokeh.

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