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View Poll Results: Wich one would you choose?
Pentax Da 16-45mm f/4.0 ED AL 9335.23%
Sigma 18-50mm f/2.8 EX DC Macro 5520.83%
Tamron 17-50mm f/2.8 XR Di II 11643.94%
Voters: 264. You may not vote on this poll

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01-18-2009, 11:30 AM   #1
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Da 16-45mm f/4.0 ED AL vs Sigma 18-50mm f/2.8 EX DC Macro vs Tamron 17-50mm f/2.8 XR

Which one of those lenses would be the best option? How do they compare at f/4?

01-18-2009, 11:52 AM   #2
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At F4 there may not be too much difference.. the Real question is how do they perform at 2.8... well unfortunatly thats a game the 16-45 cant play (and it is a great lens I love mine)
01-19-2009, 02:41 AM   #3
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QuoteOriginally posted by Deni Quote
Which one of those lenses would be the best option? How do they compare at f/4?
Read the photozone.de reviews or other careful reviews and ignore anecdotal evidence.
01-19-2009, 09:36 AM   #5
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Well, I just picked up a new DA 16-45 from prodigital2000 for $265...there's something to be said for that!
01-20-2009, 10:31 AM   #6
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I can't speak to the Tamron but I had the Sigma and now own the Pentax. Great lens and better than the Sigma IMO.
01-20-2009, 04:03 PM   #7
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Anecdotal evidence and biased owner here but I use the 16-45 lens by default and go to others for special purposes:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/47367-da-16-45...rs-thread.html
Just some samples from a few days ago...
01-20-2009, 04:04 PM   #8
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Voted for the 16-45, because it's the one I own, so I can't speak for the others.

01-21-2009, 12:43 PM   #9
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sigma 17-70mm
01-21-2009, 12:58 PM   #10
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QuoteOriginally posted by Phaser Quote
sigma 17-70mm
That's not really on the list, is it?
01-25-2009, 01:18 AM   #11
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QuoteOriginally posted by Peter Zack Quote
I can't speak to the Tamron but I had the Sigma and now own the Pentax. Great lens and better than the Sigma IMO.
Other than the focal length differences, what do you find better on the Pentax over the Sigma?

Just curious as I have the Sigma and like it quite a bit, even at f/2.8 - but would love to have the 16mm wide end of the Pentax.
01-25-2009, 03:13 AM   #12
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I have owned the 16-45 and the tamron 17-50 (still have that one).. The Tamron is the obvious choice for me, sharper (esp. corners) and less fringing in my experience.. I actually prefer it to the 16-50 (don't shoot me ;-)

I have the Sigma 17-70 too (my fiancee uses it) I would find it a bit more difficult choosing between this and the 16-45 (unless like for her the extra length is important), but it certainly doesn't win out over the Tamron 17-50 in my opinion...
01-25-2009, 03:35 AM   #13
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tamron is good but hasn't a nice bokeh...

maybe pentax 16-45mm...
01-25-2009, 06:39 AM   #14
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As for the Pentax vs the Sigma, It's a simple matter of the sharpness. I found the Pentax to be a sharper lens, Even at f4 vs f4 for both. The Pentax SMC coatings render a warmer image with better flare control than the other brands but that's been a long standing advantage of SMC.

My impression, from memory, was that the Sigma fell between the Kit lens and the DA16-45mm and I was hoping for better and closer to the DA*16-50 but there's no free lunch. Of course that's just one lens and there can be sample variations.

Clearly from the comments above. The 16-45mm is a solid lens but user experiences with all 3 are variable.
01-25-2009, 12:37 PM   #15
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The Pentax 16-45, but ...

are you really comparring Apples with Apples.

You should have at least had the DA* 16-50 f2.8 in the list. The DA 16-45 f4 is a rather old lens design, which I think has been replaced with the newer DA 17-70 f4 SDM.

Regards

Chris Stone
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