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10-15-2012, 10:33 PM   #1
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Pending K-5 II purchase

I am in the process of selling off my Canon gear and will jumping into the Pentax world with a K-5 II. One of the things I liked about the K-5's is the weather sealing, but without a matching WR lens it defeats the purpose. But the lens I will eventually be getting will be fast wide angle lens (F2.8 or faster), which will duplicate the focal length of the kit that are WR rated. Are there any other manufacturers of WR type lens that fit the K-5's? I shoot mainly general landscape or interior scenes for my church.
The two kit lens I am looking at is the SMC DA 18-55mm f/3.5-5.6 AL WR or the SMC DA 18-135mm f/3.5-5.6 ED AL [IF] DC WR

In the the 18-55mm portion of each of these two lens, does anyone know which is better?

The other lens I am looking at is the Tamron 17-50mm f/2.8 XR Di-II LD or the Sigma 17-50mm f/2.8 EX DC HSM
and with one of those two either a:
Sigma 10-20mm f/4-5.6 EX DC J or the Sigma 10-20mm f/3.5 EX DC HSM

Any comments about my plans or suggestions? I don't know anything about Pentax lens or how they are named.
On the plus side, waiting for promised PayPal payments for some of the Canon gear and that will be enough to start giving Pentax my money.

10-15-2012, 11:41 PM   #2
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QuoteOriginally posted by Wingincamera Quote
In the the 18-55mm portion of each of these two lens, does anyone know which is better?
The 18-135mm is a little bit better. In our in-depth review, we compared it to the old 18-55mm, which was blown out of the water by the 18-135mm. The newer (WR or II) 18-55mm is much better than the old one, though.

QuoteOriginally posted by Wingincamera Quote
Are there any other manufacturers of WR type lens that fit the K-5's?
Sigma has started making 'splashproof' lenses, but I don't think any are available for Pentax yet. This was supposed to come out in the K-mount, but considering that it hasn't yet, I doubt it ever will (it was announced last summer):
Sigma 12-24mm f/4.5-5.6 EX DG ASP HSM II Wide-Angle Zoom 204109

Regarding the other lens choices, see these reviews:
DA* 16-50mm vs. Sigma and Tamron 17-50mm F2.8 Comparison - Introduction -
Sigma 10-20mm F3.5 vs F4.0-5.6 - Introduction -
DA 12-24mm vs Sigma and Tamron 10-24mm Comparison - Introduction -

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10-16-2012, 06:56 AM   #3
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There are a number of posts about this topic, which Adam summed up pretty succinctly. I'd put a +1 for the 18-135. Unless I need longer reach or a more specialized lens, it's my default lens. I was caught in the rain a couple times this summer, and wouldn't have had the camera with me those days without that lens.

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