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12-02-2013, 05:10 AM   #1
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Buy or not

I am a bit stuck.

I am looking at the Pentax 18-135mm which currently has a pretty good discount. I have a Tamron 18-250 which pretty much sits on my camera. I have an 18-55mm WR and a 50mm F 50 which I dont use much because I dont like carrying or fiddling with lens changes.

Is the 18-135 going to be an upgrade or am I just having lens envy. I went through the metadata on LR and found to my surprise that I am shooting 85-90% of my shots in the range of 35-140mm

Advice welcomed.

Steve

12-02-2013, 05:49 AM   #2
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The 18-135 is a better built lens than the 18-250. It does not have the problems with zoom creep and focus noise. However it only goes to 135mm. But it is a very nice lens , especially in the 30-90mm range. I sold my Tamron 18-250 to buy it and have been happy with that decision. YMMV
12-02-2013, 06:02 AM   #3
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Better image than 18-250 or not so much?
12-02-2013, 06:42 AM   #4
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The longer the zoom range, the worse the optical quality, usually. Some people avoid a zoom that has over 3x zoom range. The 18-135mm is also WR btw, which can be great if you have a WR camera.
If you want better IQ, I suggest you go with a prime lens or a higher tier zoom. Its pointless to keep investing in lenses with similar zoom range and similar quality. Maybe think about the nice Tamron 17-50mm f2.8 or the Pentax 16-45mm, or the very beloved Pentax * 50-135mm. You already have the F 50, so you probably notice the difference in quality.
Oh and if you have a Pentax store nearby, maybe they will let you take a couple snapshots with a lens before you buy it. That way you can make sure if its quality is where you want it.

12-02-2013, 07:06 AM   #5
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QuoteOriginally posted by srock Quote
Better image than 18-250 or not so much?
I would say noticeably better at the wide end, probably better through 135mm. My 18-250 hasn't seen much use since I got the 18-135.
12-02-2013, 08:14 AM   #6
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I seem to be hearing that- The 18-250mm is used less with the 18-135 being the go to lens for every day use

Steve
12-02-2013, 09:05 AM   #7
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The DA18-135 has been described as an excellent 18-80 that also goes to 135. The 18-250 could get good results if you worked at it, but naturally it was weaker at the wide and long ends. Losing 135-250mm hasn't hurt me much, since I knew it wasn't going to be great there anyhow.
12-02-2013, 09:19 AM   #8
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The 18-135 is centre sharp all the way to 135, and I find that's a really useful compromise, for wildlife and things you are likely to want telephoto for. At 24mm it's one of the best Pentax lenses money can buy. Center sharp and excellent edge sharpness as well. I walk with the 18-135 on the camera, and carry the 60-250 in case I need it, but, the DA* 60-250 doesn't get out of the bag very often. I don't know but I'm guessing, you can't find another super zoom as center sharp at 135mm as the 18-135. To me it's the perfect compromise between a super zoom, and a really high IQ zoom, like the DA* 50-135, Tamron 17-50 type combo.

12-02-2013, 09:29 PM   #9
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In for an 18-135 just before the sale ended
Thanks for the help

Steve
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