Hi Rob,
Can you focus it properly? This is the main problem I've always had with
Sigma lenses on Pentax bodies: when you adjust focus for a given focal
length, you get a gross focus error at other focal lengths. This was the
reason for selling my Sigma 17-70 f/2.8-4 OS HSM in a month and even the
70-200/2.8 shows that problem to a certain degree, so that I had to adjust
it for something between 135-200mm and use the DA* 50-135mm below that.
Dario
-----Messaggio originale-----
From: Rob Studdert
Sent: Thursday, January 09, 2014 8:21 AM
To: Pentax-Discuss Mail List
Subject: Re: DxO recommends lenses for the K-3
Yeah, the 17-50/2.8 is almost permanently on my #2 body, it's pretty good.
On 9 January 2014 10:37, Bruce Walker <[email protected]> wrote:
DxO measured a whack of glass for sharpness and stuff on the K-3 and
also compared to how they look on the K-5.
Are you sitting down? Best lens for both prime and zoom category is a
Sigma ...
http://www.dxomark.com/Reviews/Best-lenses-for-the-24-MPix-Pentax-K-3-Recommended-primes-and-zooms
No big surprise: the good lenses all measure as sharper on the K-3. If
you have a DA* 55/1.4 on your K-3: suhweet! (As you will have
discovered for yourself by now anyway.)
They haven't yet measured the DA* 50-135/2.8, the DA* 60-250/4, or any
FA Ltd's, so that may change the chart.
--
-bmw
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Rob Studdert (Digital Image Studio)
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