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07-02-2011, 06:02 PM   #1
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Have the K-5 ordered and need some help picking the right lens.

I just ordered a new k-5 and need some help picking out the right lens because it will be the only one I will have for a few months. There are two I am looking at: the DA 18 -135mm DC WR or the SmcP FA 43mm f/1.9. I will be using this for a little of everything so I need something that is versatile. Thanks for your help.

07-02-2011, 06:05 PM   #2
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Welcome aboard and to the Club!

As much as I would like to tell you to buy the 43mm Limited,

Pentax FA43mm Limited - a set on Flickr

for the most versatility in getting everything, get the zoom. That is, unless you are willing to do a lot of manual zooming (walking to and fro to get your subject framed properly).

07-02-2011, 06:08 PM   #3
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Welcome! The kit lens 18-55 is just one fine good lens
07-02-2011, 06:38 PM   #4
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go for the 18-135, the zoom range it covers can handle pretty much anything and everything. If there's something you shoot a lot that it can't handle, then you'll know what kind of lens to buy next

07-02-2011, 06:52 PM   #5
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FA 31 LTD is my dream lens. Many owners say they have it on their camera 80% plus of the time, and it is a normal perspective on APS-c.
07-02-2011, 07:15 PM   #6
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18-135mm w/o doubt!
43mm f1.9 is a great lens but it focuses paifully SLOW on K5 ( at least my copies of both), you'll miss a lot of shots despite it's larger aperture. The sensor in K5 is so good, that it compensates for the smaller opening of 18-135 (which is actually not that small near 43mm) + you are getting a very useful zoom range in small WR package.

Had my doubts about getting it (got a decent set of zooms and primes) but now it stays on my K5 80-90% of time and I am selling ~1/2 of my other lenses including 43/f1.9...
07-02-2011, 09:26 PM   #7
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Among my lenses, the two most versatile lenses are:
- DA18-250mm and
- FA31mm f1.8 Ltd.

When I like to travel light with one lens and one body, no lens swapping, the above are my preferences by far.

The DA18-250m is extremely versatile. The lens is very sturdy. It does not have the WR badge but it is very rugged. Manufactured by Tamron, the lens is sold as Tamron 18-250mm and Pentax 18-250mm. No longer manufactured, you can find some good copies of the 18-250mm on the marketplace, at and for around $350-450.

The FA31mm f1.8 has the 'perfect' focal length, not too wide nor too narrow. The IQ is outstanding, and the lens is fast, very useful in low light. The lens is worth its price.

Hope that the comments will help....
07-02-2011, 10:31 PM   #8
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Im always a prime person, so i say get the 43mm. Plus, at this rate, the price of the 43mm will only go up.

07-02-2011, 11:52 PM   #9

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DA limited's are winners
07-03-2011, 12:08 AM   #10
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When I got my K-5 I had ordered a 18-135 WR, when it didn't come in with the camera, I picked up a 43mm Ltd used. I love the 43 ltd, and even though I am a little disappointed in the 18-135's overall performance it is more versatile by far. If you are looking for pure image quality then get the 43 Ltd... even at that I would rather save more and get the 31 Ltd. I'm already considering selling my 43 and picking up a DA 15 Ltd or Sigma 10-20 to go with the 18-135. But the 43 ltd does decent pano's
07-03-2011, 07:12 AM   #11
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First lens - get the zoom

Get the zoom for the first lens. Primes are specialty items for people who know in detail what they like and want.
Plus, the 18-135 is weather resistant. You can take the K-5 out in the rain with that lens, not with the 43mm.

07-13-2011, 03:16 AM   #12
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You don't say what sort of photography you intend doing. But for versatility I'd suggest the 2.8/35 macro ltd. The 1.9/43 in my experience is just a bit too long for general use.

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