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03-04-2010, 10:44 AM   #1
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Comparison images Tamron 17-50 vs DA 18-55II?

Anybody out there have comparison shots from a Tamron 17-50 f/2.8 and the Pentax DA 18-55II ? I can find comments, but no comparison images. Or, if you have a link I'd appreciate it if you would post it. Thanks,
Brian

03-04-2010, 12:37 PM   #2
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QuoteOriginally posted by FHPhotographer Quote
Anybody out there have comparison shots from a Tamron 17-50 f/2.8 and the Pentax DA 18-55II ? I can find comments, but no comparison images. Or, if you have a link I'd appreciate it if you would post it. Thanks,
Brian
Sorry, cant help you with the specific question. But i am curious, are they in the same price range?

I thought the Tamron was considerably more expensive, if not, then i can see people not sure which way to go...
03-04-2010, 02:12 PM   #3
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The tamron is more expensive.
03-04-2010, 02:50 PM   #4
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https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/88312-sharpnes...n-17-50mm.html

Comparison between the 18-55L and tamron 17-50. 18-55L is optically the same to the 18-55 II.

03-04-2010, 04:40 PM   #5
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Astroguy12s, thanks for the link and many thanks to taurus9 for posting the original comparison. To my eye the Tamron is sharper until f/8 and then they're so close I can't really see any difference on screen. Since I do most of my shooting in outdoors daylight the faster and sharper and constant aperture Tamron seems the way to go despite the $300 price difference,
Brian
03-04-2010, 04:57 PM   #6
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FYI, both lenses are also reviewed in a lot of detail on a number of sites - eg Lenstip and SLR Gear:

Tamron 17-50:
Tamron SP AF 17-50 mm f/2.8 XR Di II LD Aspherical (IF) review - Introduction - Lenstip.com

Tamron Lens: Zooms - Tamron 17-50mm f/2.8 XR Di II LD Aspherical IF SP AF (Tested) - SLRgear.com!

Pentax 18-55 AL II:
Pentax smc DA 18-55 mm f/3.5-5.6 AL II review - Introduction - Lenstip.com

Pentax Lens: Zooms - Pentax 18-55mm f/3.5-5.6 AL II SMC DA (Tested) - SLRgear.com!

The kit lens compares very well to the Tamron in the resolution dept, but not wide open. The Tamron apparently controls CA better than the kit lens too.
03-04-2010, 10:27 PM   #7
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QuoteOriginally posted by FHPhotographer Quote
Astroguy12s, thanks for the link and many thanks to taurus9 for posting the original comparison. To my eye the Tamron is sharper until f/8 and then they're so close I can't really see any difference on screen. Since I do most of my shooting in outdoors daylight the faster and sharper and constant aperture Tamron seems the way to go despite the $300 price difference,
Brian
I am not following, if you shoot mostly outdoors/daylight then wouldn't you be mostly at f8+?
03-05-2010, 12:03 AM   #8
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QuoteQuote:
FHPhotographer: Anybody out there have comparison shots from a Tamron 17-50 f/2.8 and the Pentax DA 18-55II ? I can find comments, but no comparison images. Or, if you have a link I'd appreciate it if you would post it. Thanks,
Brian
Brian, a great place to compare images would be in our "Tammy Club" and in the "Kit Lens Club," both of which are just mouse clicks away for you. In fact, they are in the same section as is this thread.

03-05-2010, 12:08 AM   #9
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QuoteQuote:
Kathyk: I am not following, if you shoot mostly outdoors/daylight then wouldn't you be mostly at f8+?
Well, it depends where you shoot outdoors. I often do a lot of hiking which, when below tree-line, means I'm in the woods. Light is scarce in the forest. In places like these, it can be nice to have faster apertures. Also, when you are looking for shallower DOF, it is also nice to have larger apertures.

Most lenses do compare similarly @ f8--it is at larger apertures where differences begin to manifest themselves. But, you are right in that, if shooting outdoors, in good light, f8 is often desired.
03-05-2010, 12:14 AM   #10
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jewell, I must be doing something wrong, I did a search in the "Tammy Club" for the 17-50 and failed to find anything,
Brian
03-05-2010, 12:27 AM   #11
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kathyk, I guess I don't understand your question. You may be confusing landscape with outdoors. I'm outside but 90% of the time the object is only several feet away and needs a shallower DOF to blur all that landscape in the background. Plus the sweet spot for the Tamron 17-50 (like many lenses) is in the f/4-5.6 range, and starts dropping off at f/8 and (usually) keeps dropping,
Brian
03-05-2010, 01:11 AM   #12
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FHPhotographer: jewell, I must be doing something wrong, I did a search in the "Tammy Club" for the 17-50 and failed to find anything,
Brian
No, nothing you are doing wrong--I don't think--our search engine @ this forum is probably rated at 1, on a scale going to 10.

Seriously, in the Tammy thread there are a multitude of 17-50 shots. I know, because, not only have I posted more than 10 there, but have seen many by others as well. Instead of doing a search, just go through the thread, reading the title given to each post--usually each shot is labeled according to the lens used.

BTW, more of the 17-50 shots are on the more recent end of the thread--remember, the lens is relatively new (2 years old in Pentax mount.) Let me know if you can't find any--okay?
03-05-2010, 03:34 PM   #13
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jewell, thanks for the feedback,
Brian
03-05-2010, 11:07 PM   #14
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FHPhotographer: jewell, thanks for the feedback,
Brian
Brian, anytime!
03-05-2010, 11:17 PM   #15
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After owning a Sigma 18-50 Macro f/2.8 and DA 18-55 (ver.1) in the past the only advantage the Tamron or Sigma f/2.8 constants have is they are brighter/faster for indoors or low light. I'm more than happy with my DA-L kit that came with the K-x. Spending another $500-600 Canadian for the low light is up to your needs/wants.
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