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12-27-2013, 01:05 PM   #1
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Just got a K-50 and looking for a lens

I just got aK50 and I'm very happy with it. I upgraded from a Pentax k-200d. I use a Sigma 17-70 lens. I feel it takes good pictures but i'm looking for a little bit more range. I read lots of reviews and have come up with two zoom lens's. Pentax 18-135 and Sigma 18-250. I'm leaning towards the sigma after reading the review here. I know it's tough on low light and my Sigma 18-70 would work better.
Any Ideas from people that own these two lens's Thanks

12-27-2013, 01:17 PM   #2
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Two things - the 135 isn't all that much longer than 70 in many situations. It is weather resistant, though, which has advantages of its own.
If you're looking for a better range maye a 55-300 would be a good decision, then you have a two-lens kit. Granted, you don't have the superzoom range but you'll have two nice consumer zooms.

I have the 18-135 and 55-300 for standard zoom use. Before that I used a 16-45, which I still use indoors. I looked at the 18-250 but wanted stronger long-range for birds and wildlife so I went to the 55-300.
12-27-2013, 01:29 PM   #3
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My wife uses the 18-135 plus a 55-300 as a two lens kit. Plenty of overlap so she does not have to change lenses as much. Depends on whether you just want a single do all lens for maximum convenience or can use a two lens that will cover more range with better IQ.

Another thought is that if you are used to Sigma, you might want to stick with that brand, I think the zoom ring is backwards from Pentax. Somebody can please correct me if that's wrong.
12-27-2013, 02:27 PM   #4
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QuoteOriginally posted by jatrax Quote
My wife uses the 18-135 plus a 55-300 as a two lens kit. Plenty of overlap so she does not have to change lenses as much. Depends on whether you just want a single do all lens for maximum convenience or can use a two lens that will cover more range with better IQ.

Another thought is that if you are used to Sigma, you might want to stick with that brand, I think the zoom ring is backwards from Pentax. Somebody can please correct me if that's wrong.
I have the same combination. My husband has the Sigma 18-250 and although he's happy with its versatility, I like the 55-300 better. I think the image quality is better and the new version is weather-resistant.

12-27-2013, 02:44 PM   #5
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QuoteOriginally posted by hmcfly Quote
I just got aK50 and I'm very happy with it. I upgraded from a Pentax k-200d. I use a Sigma 17-70 lens. I feel it takes good pictures but i'm looking for a little bit more range. I read lots of reviews and have come up with two zoom lens's. Pentax 18-135 and Sigma 18-250. I'm leaning towards the sigma after reading the review here. I know it's tough on low light and my Sigma 18-70 would work better.
Any Ideas from people that own these two lens's Thanks
I like the Pentax 18-135 as my WR walkabout lens. For sharper images, I shoot fixed focal length primes at 15, 35, 50 and 70mm. The 18-135 works beyond the 70 Ltd until I need my 55-300 DA. The 55-300 is a fine value lens with noisy screw drive AF. But for wildlife more than 30 yards away, the noise is irrelevant. Hummingbirds don't like the 300's focus noise when the lens is four feet away.
12-27-2013, 04:42 PM   #6
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The 18-135 is attached to my K5 most of the time. I like it. It's nice, sharp, and silent.
01-04-2014, 11:37 AM   #7
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QuoteOriginally posted by VoiceOfReason Quote
The 18-135 is attached to my K5 most of the time. I like it. It's nice, sharp, and silent.
Well I sold my Sigma 17-70 and Got the Sigma 18-250. I've been messing around with it on flowers in the yard and really like it. It should be a good walking around lens. Now i'm looking for a good prime that's not too expensive any ideas? thanks so much
01-04-2014, 11:51 AM   #8
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QuoteOriginally posted by hmcfly Quote
Now i'm looking for a good prime that's not too expensive any ideas?
What focal length? Both of the DA primes are getting good reviews and are not expensive. DA 35mm f/2.4 and DA 50mm f/1.8

01-04-2014, 11:56 AM   #9
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The Pentax 35mm Limited is superb. I got mine with the old green ring from B&H for $349 on Black Friday. With the crop factor, this is a normal lens but the viewfinder shows a wide angle perspective. I love this lens.
01-04-2014, 11:59 AM   #10
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By the way, the 35 Limited is a macro as well, with close focus at 1:1 that is about two inches. Probably not good around nervous bugs but flowers don't flinch.
01-04-2014, 12:49 PM   #11
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For primes I do like my Pentax F50 f/1.7, and my DA 40 XS f/2.8 isn't too shabby, though my next lens purchase will not be a prime, but the Sigma 18-35 f/1.8. All the reviews say it's like a bag of primes!
01-04-2014, 01:44 PM   #12
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The 18-135 is a very good value. I have a shot of an egret from 150 yards and at 100% crop the bird's eye is perfect reptilian predator. As I said before, the 18-135 is my choice if weather is lousy. Cranked out at f18 the sharpness is good. But I can get the same shots with my 35mm Ltd and crop until I drop. So it comes down to shooting style and climate conditions. None of the Limited primes are weather sealed. The 18-135 is. I wish the Limiteds were WR!
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