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Old Dec 23, 2008, 4:09 PM   #1
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IQ 18-250 lens


I would really like some input on this lens, as it has for a while, been itching me for some time now.

- getting tired of hauling around two lenses
- tired of switching lenses, to get the shot i want
- tired of missing the shot i wanted cause i was switching lenses
- not interested in taking photos for Natgeo or equilivent
- past reviews gave this lens a good outdoor rating

So i ask

1 - would this lens be good for use outdoors and indoors use my 360 external flash

OR

2 - should i just use my 16-50 and just crop to suit as if it was a 16-250

Dave
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Old Dec 24, 2008, 2:15 PM   #2
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Yeah.

You could always crop in (which is how I currently justify not getting anything longer than 200mm), but from 50mm to 250mm, wouldn't that be a big difference in perspective? [IE. You lose the compression effect of a longer focal length?]

Take care,
Glen


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Old Dec 25, 2008, 7:06 AM   #3
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Hi Dave,

To me that is too big of a range for a zoom. I use a 28-200mm. I have not missed any shots with it.

I do landscape and ski jumping with it. If I need wider I have the kit lens for that. For longer I use my 70-300mm.

I know you said you wanted just one lens, But one lens is not a good solution to me.

Just my opinion, but at least two lenses are better. Just a little more work.....:G

Rudy


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Old Jan 2, 2009, 3:32 AM   #4
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If you have a 10M pixel shot at 50mm, and you crop it to look like a 250mm, then because you crop 4/5 of the shot from both the length and width, you will end up with a 0.4 M pixel shot.

Is that what you need?
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Old Jan 2, 2009, 8:17 AM   #5
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I don't have the DA 18-250mm, but like you I have considered it for the same reasons. Particularly when you are in a windy, dusty environment - don't want to be changing lenses in those conditions.

There are some user reviews here: http://www.pentaxforums.com/lensrevi...305&cat=43

I have read that the Pentax version is essentially the same as the Tamron 18-250mm Di II LD, but I can't verify that. But here are some user reviews for the Tamron version which I think can be found cheaper than the Pentax: http://www.pentaxforums.com/userrevi...344&cat=76

Pbase is asearchable source for looking at photos. You can look up photos by camera or lens: Here is link to Pentax DA 18-250mm: http://www.pbase.com/cameras/pentax/...a_18_250_35_63

You can also find photos taken with the Tamron version on the Pbase site.

Good luck, and let us know what you think if you get one.
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Old Jan 2, 2009, 3:17 PM   #6
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In the final analysis, it is the real world performance of a lens that counts, and the user opinions in the links cited above (plus published reviews) certainly demonstrate that this is a fine lens for general all-around use, best in the near and mid-ranges. There is a caveat, though: If, however, you have more demanding requirements - at the long end end in particular - you might wish to look at other options. In this month's Modern Photography there is a review of the newer Tamron 18-270, performance of which they found nearly identical to the 18-250, which shows that the performance at the longer end is decidedly soft - so much so that they expressed the opinion that for critical users, this might prove a "deal breaker". This review is not yet posted on their web site, but you might wish to take a look at the resolution charts in their review of the Tamron 18-250 (http://www.popphoto.com/cameralenses...-ii-macro.html ) and the Pentax 55-300 ( http://www.popphoto.com/cameralenses...0mm-f4-58.html ) in which they have comments comparing that lens with the Pentax 18-250 (same lens as the Tamron). There are situations in which I could find the 18-250 useful, but I am now so satisfied so far with the two lens combination of the kit lens and the 55-300 that, (plus with the other lenses I have accumulated along the way) I could not justify the cost of the 18-250 merely as a convenience for occasional use. Now if someone wanted to give me one . . . . :roll:
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Old Jan 2, 2009, 5:23 PM   #7
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Just a thought, but if you've already got two good lenses, and your only complaint is having to switch lenses ...

A new K200D body isn't a lot more expensive than the 18-250. Why not buy a second body for the second lens? You'll get better image quality, and you'll definately look cooler with two dSLRs instead of just one.
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Old Jan 2, 2009, 10:21 PM   #8
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TCav wrote:
Quote:
Just a thought, but if you've already got two good lenses, and your only complaint is having to switch lenses ...

A new K200D body isn't a lot more expensive than the 18-250. Why not buy a second body for the second lens? You'll get better image quality, and you'll definately look cooler with two dSLRs instead of just one.
And carrying two camera bodies isn't a big deal with a camera strap that's designed for two cameras. I have one and was surprised how it made it easier to juggle two cameras.
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Old Jan 8, 2009, 5:51 PM   #9
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so ther i was about to press the order button on Amazon for the 18-250 lens , then i paused. i will need a low light lens to go with that , then i pause again, but then i would be back to 2 lenses again duh!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!

Its a no win situation

Dave

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Old Jan 8, 2009, 8:40 PM   #10
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Yeah.

But, it will be a different. Instead of scrambling between focal-lengths to grab a shot, you're switching lenses because it's too dark for the 18-250 to auto-focus quickly.

For the most part, I just have my Sigma 18-200 on the camera. That way I'm not switching lenses for focal length when shooting family & friends.

Only when I get into trouble with the auto-focus not working [ie. At a friends house and it gets dark and they don't have a lot of lights in the room.]I toss on my Pentax 28-80 to be able to auto focus in low light. And then I just keep that lens on for the rest of the night.

Not a lot of switching. Or at least a different type of switching.

I just figured out this set-up a month ago, but the few times I've been out, it's worked for me! I'm glad I got a super-zoom (ie. Sigma 18-200) & just have the cheap Pentax 28-80 (3.5-5.6?) for back-up in low-light.

Take care,
Glen





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