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05-24-2011, 03:01 PM   #31
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QuoteOriginally posted by K57XR Quote
but unfortunately, Tammy didn't make one for Pentax mount.
it seems rather frustrating that most lenses are made for canikon...

05-24-2011, 10:59 PM   #32
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QuoteOriginally posted by Marc Sabatella Quote
When I've done this, I can see the 18-250 is better, but perhaps not $300 better.
Now days, only Sigma has a 18-250 lens on the market, and there is no review on it on Photozone.de
05-25-2011, 01:04 AM   #33
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QuoteOriginally posted by MK-x Quote
Now days, only Sigma has a 18-250 lens on the market, and there is no review on it on Photozone.de

Sigma 18-250mm F3.5-6.3 DC OS HSM Lens Reviews - Pentax Third-Party Lens Review Database

Both the Pentax and Tamron (virtually the same lense) 18-250 come up quite often and so can easily be found used.
05-25-2011, 01:41 AM   #34
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After reading many reviews, I'm tired and don't want to buy anything anymore .
Some love these lenses, and some speak very "chilly" of them. Of course, it's a matter of experience and a good eye sight
As I've said before, right now I have the DA L 18-55 mm kit lens, and I'm pretty pleased with it. So if comparing the IQ of 18-200 and 18-250 to it (as much as possible), are they better/same/worse?

05-25-2011, 01:44 AM   #35
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QuoteOriginally posted by Frogfish Quote
Both the Pentax and Tamron (virtually the same lense) 18-250 come up quite often and so can easily be found used.
what website you can recommend as a good marketplace for used lenses?
05-25-2011, 02:22 AM   #36
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QuoteOriginally posted by MK-x Quote
what website you can recommend as a good marketplace for used lenses?
The marketplace here is a good start.
05-25-2011, 02:30 AM   #37
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QuoteOriginally posted by MK-x Quote
As I've said before, right now I have the DA L 18-55 mm kit lens, and I'm pretty pleased with it. So if comparing the IQ of 18-200 and 18-250 to it (as much as possible), are they better/same/worse?
I think any superzoom is going to be (a little or a lot) worse in the 18-55 range than your kit lens, there's a lot of design compromise involved in making those things.

If you don't mind changing lenses sometimes (which is kind of the point of an interchangeable lens camera) the DA L 55-300 is a great companion to your 18-55, and is only beaten in quality by lenses costing 3-4 times as much.
05-25-2011, 02:53 AM   #38
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QuoteOriginally posted by timh Quote
If you don't mind changing lenses sometimes (which is kind of the point of an interchangeable lens camera)
well, that's the whole point for buying this type of lens, that you don't have to change them (I guess that I haven't gotten rid of Point & Shoot thinking yet... :-) )

05-25-2011, 03:31 AM   #39
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QuoteOriginally posted by MK-x Quote
well, that's the whole point for buying this type of lens, that you don't have to change them (I guess that I haven't gotten rid of Point & Shoot thinking yet... :-) )
Very good quality IQ as a walkaround convenient lenses ........ but if you want better IQ and creative options then you do need to get out of the 'one lense suits all' and 'convenience' mentality. Changing lenses is a pain in the butt but the results will more than make up for the inconvenience.

The 18-250 and the like are great for when e.g. your better half is going to lose patience with you on your vacation if you keep changing lenses every few minutes ! Or in windy / stressful conditions (mountain climbing perhaps) ?

Another vote for the 55-300 as a good companion to your 18-55. I doubt you would regret that purchase and you'd have a very nice 18-300 kit.
05-25-2011, 12:35 PM   #40
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The 18-250 has a reputation for being about as good as the 18-55 - some say slightly better, some say lightly worse, but pretty much everyone agrees it's close. The 18-200 has a reputation for being a bit worse, but my limited experience say, you'll probably never notice.

Also, to see the reviews on photozone, you have to have to visit the *Canon* section.
05-25-2011, 01:15 PM   #41
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QuoteOriginally posted by Marc Sabatella Quote
The 18-250 has a reputation for being about as good as the 18-55
which one do you mean? Pentax/Tamron or Sigma?
right now there is no (2nd hand) Pentax/Tamron, so it's only Sigma.
After reading here, I began thinking of 55-300 also. The only drawback of it for me is the need to change lenses (18-55 / 55-300)...
05-25-2011, 04:28 PM   #42
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QuoteOriginally posted by MK-x Quote
which one do you mean? Pentax/Tamron or Sigma?
I meant the Tamron/Pentax, but actually, it's generally said about both.

QuoteQuote:
right now there is no (2nd hand) Pentax/Tamron
Sure there is - it's just a question of looking. I saw several on Ebay just now. They aren't hard to find. They aren't cheaper than the Sigma, but they are quite a bit smaller and lighter.

Last edited by Marc Sabatella; 05-26-2011 at 10:14 AM.
05-25-2011, 05:12 PM   #43
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QuoteOriginally posted by MK-x Quote
well, that's the whole point for buying this type of lens, that you don't have to change them (I guess that I haven't gotten rid of Point & Shoot thinking yet... :-) )
However the whole point of using a DSLR rather than a P&S is to get better pictures right? So why handicap your DSLR with an inferior lens when you can have just 2 lenses that cover the range and do so with better image quality.
05-25-2011, 06:12 PM   #44
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QuoteOriginally posted by timh Quote
I think any superzoom is going to be (a little or a lot) worse in the 18-55 range than your kit lens, there's a lot of design compromise involved in making those things.
I wouldn't be so sure. I don't have the kit lens but I know that the Tamron 18-250 leaves nothing to be desired in the 18-55 range regarding sharpness and is at least as bright as the kit lens.

Yes, it has more (barrel) distortion at the wide end than the kit lens but this is easy to correct in post processing. It might vignette a bit more as well (not sure), but again this is easy to correct. I often don't correct any of these, though, because it either doesn't matter or it even adds to the effect of an image.

If someone is interested in the numbers they could try to find a review site that reviewed both lenses. Comparing numbers across different review sites is always problematic as different test procedures and analysis methods are used. If you are using one review site, note that reviews using different cameras (e.g., Pentax vs Canon) also makes it impossible to compare most numbers (sharpness, CA, etc.).
05-25-2011, 10:32 PM   #45
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QuoteOriginally posted by Class A Quote
I wouldn't be so sure. I don't have the kit lens but I know that the Tamron 18-250 leaves nothing to be desired in the 18-55 range regarding sharpness and is at least as bright as the kit lens.
the question is also whether it worth the extra 300$ (when compared to 55-300 for ex.)...
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