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05-14-2010, 07:19 AM   #1
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My head is spinning. 16-45mm or 17-70mm or...

... Tamron 17-50 or... ??

Every time I look at reviews I am swayed left and right.

Last time I wanted a single-lens-solution, I ended up with the FA 31 and foot-powered zoom.

Having lost the FA 31, I'm not inclined to buy another, as it would be too depressing, and I might also end up single.

I actually don't care much about the focal range, my main criteria is IQ, followed by size/weight.

05-14-2010, 09:14 AM   #2
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The 16-45 was the lens I bought with the K10D. I have never regretted the decision. The best thing to do is try out the lenses if at all possible. Possibly a friend or one of the members here has one you could meet up and give it a try. I don't believe you will go wrong with the 16-45, nor with the Tamron. One thing to remember is the wider the focal range of the lens the less sharp it will be across the board. My 16-45 at about f8 is as almost too sharp for some tastes. I have a large number of older adaptall-2 Tamron lenses in prime and zooms. I use all of them and they all have their place and usage when they shine, but more often than not I have the 16-45 Pentax on the camera or in the bag. It is veratile in a wildflower field as well as a wedding, graduation, prom, etc...
05-14-2010, 09:18 AM   #3
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I agree, my 16-45 is my main lens.
05-14-2010, 09:55 AM   #4
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My friend has the Sony version of the tamron 17-50 f2.8 and he found no fault with it, just fyi.

but i would go for the 16-45. needa match the gear, and it's roughly 200 bucks cheaper. =D

05-14-2010, 12:29 PM   #5
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Hard decision ... have seeing so many issues with the 16-50 f/2.8 ... I'd be swayed to the Tamron 17-50 f/2.8 (have seen many a magical image from it .. plus i have a soft spot for Tammy lenses as well)

I do like the Sigma 17-70 ... not as quick as the others ... but can be sharp (although some have had issues as well)

If i had the budget ... I'd be going the Tammy 17-50mm f/2.8 myself.
05-14-2010, 12:44 PM   #6
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It really depends on your preferences... fast, get the Tamron. Wide, get the 16-45 if you can find it. Convenient, get the 17-70. Better bang for your buck, get the Sigma 17-70.
05-14-2010, 01:14 PM   #7
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There's a brand new DA 17-70mm f4 IF lens in the market place at the moment.
05-15-2010, 10:19 PM   #8
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Thanks for all the replies. It's hard to compare the lenses physically here in HK. Due to the sheep mentality, retailers look at you as if you are crazy when you don't ask for Canikon. There is one store nearby that has the 16-45, so I'll take a look at that.

05-16-2010, 09:22 AM   #9
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QuoteOriginally posted by Unsinkable II Quote
Thanks for all the replies. It's hard to compare the lenses physically here in HK. Due to the sheep mentality, retailers look at you as if you are crazy when you don't ask for Canikon. There is one store nearby that has the 16-45, so I'll take a look at that.
Remember that the 16-45 isn't internal focus [IF].
05-16-2010, 09:45 AM   #10
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Not to add more lenses to the decision making process, but have you thought about replacing your FA31 with either the FA35 f/2 or the Sigma 30 f/1.4? Both can be found for less than $450, and both compare pretty well to the FA31.

As for your choice between zooms, if you need the 17-70 range, go with that one. If you think you need the f/2.8, go with the Tamron. Otherwise, the DA16-45 is a solid, solid performer, and you can use the money you save on that to put toward another lens.
05-16-2010, 11:30 AM   #11
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I have the Sigma 17-70 myself. It's been a great lens so far and I'm quite happy with the image quality. If I had to be critical of it, I'd say the only glaring thing is just that it's a variable aperture throughout the focal range. I'd like it to be fixed so I could have a 70mm 2.8, but for the price I guess that's a bit too much to ask.

I will say that the large filter element size is a bit intimidating if you're shooting portraits. It isn't exactly a discrete looking lens.
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