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02-10-2010, 08:17 AM   #1
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18-250 Pentax or Tamaron?

I have two questions about the Pentax 18-250 f 3.5-6.3 lens.
Tamron makes the "same" lens for about $100 less. 1) What is the primary difference between the Pentax version and the Tamron? 2) Is there a comparable lens with that focal length? (The primary complaint with this lens seems to be the locking button. Has that been changed or overcome with some other lens?) I shoot with a K10D.
Thanks

02-10-2010, 09:10 AM   #2
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Search this site for further info. There have been a number of threads that address your questions. However, in brief it's like this.

Tamron makes this lens and the Pentax verison is a rebranding of the Tamron lens. I've read that they are very similar but that the Tamron version is just a bit better. Pentax doesn't offer this lens any more although you can get it used.

I own the Tameron lens and enjoy it a lot. You wont go wrong with it. It does experience lens creep but the locking switch becomes quite familar to you with that. I actually had to send it to Tamron for repair (the rubber on the zoom was quite loose) and asked Tamron to tighten the lens zoom. When it returned, I don't have the lens creep problem anymore so it's clearly adjustable.

Again, the two are essentially the same lens.
02-10-2010, 09:32 AM   #3
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Only the Pentax 18-250mm has Pentax coatings.
03-06-2010, 05:20 PM   #4
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Interesing finding about the DA18-250. I met a fellow photographer few weeks ago, who once had DA18-250, now shooting with the Tamron 18-250. His DA18-250 was irreversibly damaged by sea water and then, when this lens was not sold anymore, he settled with Tamron 18-250.

He was not happy with the Tamron IQ wise as he used to be with the DA lens. So he decided to try having the DA repaired in a local repair shop. They ordered spare parts from Tamron, "knowing" that Pentax was a rebadged Tamron. The parts physically didn't fit (it was aperture mechanism).

So much for the rebadge story... Maybe there were only some parts shared, but who knows what amount of parts. Aperture mechanism definately not.

03-06-2010, 07:30 PM - 1 Like   #5
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There were indeed several threads on the 18-250mm that you should read. Recent ones included:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/86984-pentax-d...50mm-lens.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/89496-has-bett...l-18-55mm.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/92104-superzoo...8-300-etc.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/90826-travel-l...8-250-hsm.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/86450-what-happened-18-250mm.html

The first thread was written by a pro and its is very interesting.

The Pentax DA18-250mm and Tamron 18-250mm are very, very close. The Pentax 18-250mm is unfortunately no longer for sale, but some excellent 2nd hand lenses can be found (eg. keh.com, adorama.com, ebay). The Pentax 18-250mm tend to be favored over the Tamron 18-250mm , but not by much. The main advantage of the Pentax lens is that it s recognised by the camera body and the lens correction can enable and successfully applied.

There have been many relevant threads at PentaxForums.com and Dpreview.com on the Pentax vs Tamron 18-250mm. In my opinion, for the same price, I would go for the Pentax. But a nicely priced Tamron would be as good.

Hope that the comment will help...
03-07-2010, 04:11 AM   #6
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Actually, my local Paxton's still got both the Tamron 18-250 and Pentax DA 18-250, but asking AUD$799 for the Tammy and AUD$999 for the Pentax, ouch.
03-07-2010, 06:57 PM   #7
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QuoteOriginally posted by elpolodiablo Quote
Actually, my local Paxton's still got both the Tamron 18-250 and Pentax DA 18-250, but asking AUD$799 for the Tammy and AUD$999 for the Pentax, ouch.
I advise to buy your lens overseas. I bought my Pentax DA18-250mm from Keh.com for US$379 + shipping to Oz. You may try also adorama.com, pentaxforums.com (marketplace) and ebay.
03-08-2010, 01:54 AM   #8
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QuoteOriginally posted by hcc Quote
I advise to buy your lens overseas. I bought my Pentax DA18-250mm from Keh.com for US$379 + shipping to Oz. You may try also adorama.com, pentaxforums.com (marketplace) and ebay.
I know mate, I am just trying to show how ridiculous the local shops are charging us for lenses here.... I have no hesitation of buying overseas.

03-10-2010, 12:44 PM   #9
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+1 for a very positive experience with the Pentax version...
03-10-2010, 02:12 PM   #10
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+1 for the DA 18-250
03-10-2010, 02:49 PM   #11
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I had the Pentax version and found a Tamron on Ebay for a very good price so bought it and then sold the Pentax back on Ebay for a good profit which meant the Tamron only cost me 100.

I have to say I notice no real difference .. apart from the fact the Pentax hood felt really cheap compared to the Tamron.
03-13-2010, 06:08 PM   #12
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+1 for the DA18-250

It's my all around use lens, always on my camera. Doesn't feel too fragile, I bump it around quite a bit, it's been great for over a year now, I have nothing to complain about it at all. It's sharper than the 18-55mm kit lens in all ranges. K20D's IS system works perfect alongside the telephoto ranges of this lens.

Love it. Worth it. Great lens.
03-13-2010, 07:42 PM   #13
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da 18-250

I bought one after it first came out. That lens had lens creep. I sold it on ebay for what I paid for it. I missed it so I looked on ebay till I found a used one at a good price. This one had some dust in it and also creeped. I sent it to pentax and they cleened and adjusted it at no charge. I paid one way shipping. This is now my most use walk around. If you look at my list of lens you will see that I have some good ones.
03-13-2010, 08:28 PM   #14
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yes, yes, DA 18-250

Probably the main reason I don't use the DA 18-250 so much now is that I just got bored with having that one lens on my K20D all the time. Outside of fisheye and low-light and ultra-tele, it just did everything so WELL. So I started buying other lenses, looking for niches to fill. What a FOOL I was! Oh DA 18-250, please forgive me for ever doubting you! [sob, sniffle, sigh]
03-14-2010, 02:03 AM   #15
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QuoteOriginally posted by RioRico Quote
Oh DA 18-250, please forgive me for ever doubting you! [sob, sniffle, sigh]

It's good alright but I don't think it's THAT good
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