All Forum Comments
Comment by K10D posted on Water theme at 20/02/2011 - 01:41
A professionally executed shot.
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Comment by K10D posted on Got Gerri some flowers yesterday. at 20/02/2011 - 01:21
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Comment by K10D posted on Double Camera Straps at 19/02/2011 - 14:34





Not a bad lens when all's said and done. I'm happy with it and would recommend it.
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Comment by K10D posted on the odd bunch at 19/02/2011 - 14:22
Pentax 100mm Macro, K7

Serpentine Dam
Sigma 17-50, K7

Mundaring Weir
Sigma 17-50, K7

The weir holds back CY O'connor Lake
Sigma 17-50, K7

Along the top of the Weir
Sigma 17-50, K7

A long day and 250Km covered to get to these water features.
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Comment by K10D posted on Water theme at 19/02/2011 - 13:53
[quote:3496ace15f="Mike-P"]Hmmm, I see the Sigma 85mm f1.4 is now available as well.
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Comment by K10D posted on Sigma specials! at 18/02/2011 - 23:32
I think the less you read, and less you know, the easier the choices get. Ignorance is bliss.
However, another cheer for the kit lens.
I guess the Sigma is not WR.
To be fair, the review is 2 years old and he references that he may have had a poor copy. But with the recent K-5 issues Pentax QC needs taking to the next level.
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Comment by K10D posted on First from the Sigma 17-50 OS HSM at 18/02/2011 - 06:07
Cheers K10d, So £100 more and "it is optically worse and more expensive than the Sigma." any confirmations?
link
He is not happy with it.
from Photozone:
"Verdict
It is difficult to find a final verdict for the Pentax SMC DA* 16-50mm f/2.8 ED [IF] SDM. On the one hand it has some obvious problems like a weak border performance at max. aperture and very pronounced lateral chromatic aberrations (CAs). On the other hand it is really very sharp and contrasty at medium aperture settings (f/5.6- and many users may actually forgive the border problems at f/2.8 because you either stop down for conventional photography or rely on the (very sharp) center for shallow depth-of-field situations (e.g. portraits) anyway. The build quality of the lens is also a step up from the consumer grade Pentax lenses and the silent (although not overly speedy) SDM is an extra bonus on top. The pricing of the Pentax 16-50mm f/2.8 is fair relative to its performance and build quality".
I didn't really use mine too much to say it's a great lens or to say it has faults. Focus was slow on my K10 and I thought it a little better on my K7. No doubt faster still on a K5. The range of the lens was what drew me to it.
This Sigma is impressive and fast focus on my K7, much faster than my 16-50 SDM.
I'll be out over this weekend and give it some use in strong sunlight (inc. direct sun in frame), so I'll get a more realistic idea of how it stands up to real day to day work.
This also from this forum (before I joined).
link
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Comment by K10D posted on First from the Sigma 17-50 OS HSM at 18/02/2011 - 05:46
"The Sigma 17–50 mm is not a flawless device but neither are so its most serious competitors which are more expensive. The Nikkor overall seems to be an optically better lens but it is much more pricey than the Sigma and doesn’t feature image stabilization. The optics of the Sigma and the Canon are very similar – both boast silent and quick autofocus mechanism and stabilization. Sigma’s advantage consists of a better warranty and a bit lower price.
For the Sony Alfa system reflex cameras users the Sigma 17-50 mm can be a very interesting suggestion because Sony doesn’t offer such a lens in its line-up so the competition is definitely less fierce. It won’t be so easy in the case of Pentax because the 16-50 mm f/2.8 model from that company tempts with a wider angle of view although it is optically worse and more expensive than the Sigma.
To sum up the Sigma 17–50 mm f/2.8 EX DC OS HSM will find many satisfied users for sure. It would be difficult not to be satisfied when you can take photos as good as or even better than the brand name competitors using a cheaper lens".
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Comment by K10D posted on First from the Sigma 17-50 OS HSM at 18/02/2011 - 04:36


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