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03-20-2019, 08:42 PM   #1
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Best WR alternative to Sigma 17-50mm f/2.8?

I am planning on purchasing the sigma to replace my kit lens, but I am hesitant to get a lens that I will want to take out into the back country without WR.

Is there a good alternative that's as fast as the sigma at a similar price point? Would the DA 16-85 be a good option if I was willing to shell out the extra $200-$300 for it? Of course I am losing a lot of f-stops that way... hmmm... should I just take the Sigma out with me and try to avoid dust, etc?

03-20-2019, 09:18 PM   #2
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You basically have two options, the DA* 16-50mm or the DA 16-85mm, both more expensive than the Sigma. I can vouch for the latter. Though slower, it is quite sharp, and the AF is reliable.

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03-20-2019, 09:37 PM   #3
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QuoteOriginally posted by Adam Quote
You basically have two options, the DA* 16-50mm or the DA 16-85mm
The 16-50 isn't WR, as far as I can tell. Thanks
03-20-2019, 09:39 PM   #4
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QuoteOriginally posted by Zephos Quote
The 16-50 isn't WR, as far as I can tell. Thanks
It is, all digital star lenses are. Here's a handy list of all WR lenses:

Pentax:
Weather Sealed Lenses | PentaxForums.com

Third-party:
Weather Sealed Third Party Lenses | PentaxForums.com


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03-20-2019, 09:46 PM   #5
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QuoteOriginally posted by Zephos Quote
The 16-50 isn't WR, as far as I can tell. Thanks
The DA* 16-50 is AW. Which mean even better weather sealing than WR.

Another alternative is DA 18-135, but it is little behind in IQ. But otherwise it is a really nice lens. Light and compact and the extended zoom range is nice in conditions where you might not want to switch lenses.
03-20-2019, 09:51 PM   #6
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QuoteOriginally posted by Adam Quote
It is, all digital star lenses are.
My mistake. It's not in the name so I assumed haha!
03-21-2019, 09:38 AM - 1 Like   #7
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For what its worth, I have the Sigma 17-50 2.8 and have used it numerous times with a rain hood. I had the same challenge you mention a few years back, but now while struggling a bit with that set-up, and I know that's not what many would do, It works just fine. I love this lens and I find the quality, price point, and speed to tilt the scales in its favor over other more costly and slower options just to get the WR. I've used it oh hikes in the Cascades and parks in AZ with no problems. Granted, its not used in a driving rain or dust event but with a bit of care it has met my needs.
03-21-2019, 01:00 PM   #8
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The Sigma 17-50mm f/2.8 I have found to be a very fine lens. I don't use it under adverse conditions where WR would be needed. Fortunately, I have other compact alternatives to put in its place for such a situation if it were to arise. Under these conditions, one is not likely to benefit from the extra sharpness, detail, etc. anyway.

A lot depends on how badly do you need the f/2.8? I use the Sigma mainly when I need that. The DA 18-135mm DC WR as stated above would be an upgrade from your kit lens. And, it can keep to f/3.5-4.5 all the way out to 70mm, or about 1 stop difference compared to f/2.8 to 50mm, with very good to excellent sharpness. Its AF is way better and more accurate than the kit lens as well. In the central frame area, sharpness rating is excellent even well beyond 70mm. I have both, as well as the DA 20-40mm f/2.8-4 which is also WR. If you'd be interested in that fine lens, the silver version is right now on sale at B&H.


Last edited by mikesbike; 03-21-2019 at 01:13 PM.
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