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09-08-2010, 08:22 AM   #1
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18-135 Range?

Hello everyone,

I have had a K-7 for about 9 months now, and I absolutely love it. I have a few lenses, but what I am really missing is a lens in the range 18-135, or 105 or whatever. Just as long as it's in the ballpark.

I miss that range from a Nikon lens I had for my D40, and it was my most used lens beside my 35 1.8.

Does Pentax, Tamron, Tokina, or Sigma make a lens in that range? I have looked around and all I saw was a Sigma 24-135 which appears to be discontinued.

Any ideas?

Thanks!

09-08-2010, 08:43 AM - 1 Like   #2
Zav
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Juste wait for the photokina
09-08-2010, 09:06 AM   #3
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On the used Market there is either the Pentax/Tamron 18-250mm .... which for a super zoom is fairly decent quality .... I have seen some really amazing images from these lenses.
09-08-2010, 10:09 AM   #4
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Zav,

You make it sound like we'll see something announced at Photokina. Fair enough, I'll wait.

Seems like a hole in the market to me. I would love to have an 18-135 or so for my K-7. It's really the only lens I want.

I'm not really interested in a superzoom; they tend to be heavy and more than I need. The photos I shoot are normally in the range of 18-135; I rarely need anything longer than that. I'd rather have an 18-135, a 50 1.4, and a 100 macro. That would be my perfect collection.

09-08-2010, 10:29 AM   #5
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There's the Sigma 18-135 3.5-5.6 if you're interested. I have one and it's not bad. It's not too hard to find second hand on the market.
09-08-2010, 10:56 AM   #6
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QuoteOriginally posted by brofkand Quote
Zav,

You make it sound like we'll see something announced at Photokina. Fair enough, I'll wait.

Seems like a hole in the market to me. I would love to have an 18-135 or so for my K-7. It's really the only lens I want.

I'm not really interested in a superzoom; they tend to be heavy and more than I need. The photos I shoot are normally in the range of 18-135; I rarely need anything longer than that. I'd rather have an 18-135, a 50 1.4, and a 100 macro. That would be my perfect collection.
Zav refers to the rumour of an 18-125/3.5-5.6 coming soon.

More Pentax rumors | Photo Rumors

I'll be watching that one as well--some of these superzooms just go a little far, in my opinion. (pun not intended)
09-08-2010, 11:04 AM   #7
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QuoteOriginally posted by brofkand Quote
Does Pentax, Tamron, Tokina, or Sigma make a lens in that range? I have looked around and all I saw was a Sigma 24-135 which appears to be discontinued.
There's a Sigma 18-125mm. 18-125mm F3.8-5.6 DC OS HSM - Multipurpose Zoom Lenses - SigmaPhoto.com

I know it's common sense that a shorter zoom will outperform a superzoom, but from my research the Tamron/Pentax 18-250 matches or beats any of the kit lenses and superzooms, including Nikon's vaunted 16-85. And has a l-o--t more reach. The Tamron/Pentax is also no larger that the Sigma linked above.

But yeah, I'd wait for Photokina, just in case.
09-08-2010, 11:08 AM   #8
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QuoteOriginally posted by audiobomber Quote
The Tamron/Pentax is also no larger that the Sigma linked above.
That's Sigma for you!

09-08-2010, 11:19 AM   #9
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QuoteOriginally posted by brofkand Quote
(...)
Seems like a hole in the market to me. I would love to have an 18-135 or so for my K-7. It's really the only lens I want.

I'm not really interested in a superzoom; they tend to be heavy and more than I need. The photos I shoot are normally in the range of 18-135; I rarely need anything longer than that. I'd rather have an 18-135, a 50 1.4, and a 100 macro. That would be my perfect collection.
I'm no expert, but I believe there's probably a good reason to have this "hole in the market".

- We have the cheap kit lens, typically 18-55 f3.5-5.6
- We have more ambitious zoom lenses, faster, wider, longer, heavier and... expensive : 17-70 f2.8 and the likes...
- We have "superzooms", 18-200 or so... but those are too slow on the long end. Making them faster would mean more bulk, more weight an more money.

So, we think : I don't need 200mm. 105mm would be enough.

I'm no lens maker, but I guess a 18-105 wouldn't be cheaper to make than a 18-200 ; and for the same price, it wouldn't be faster or lighter.

Conversely, a fast 18-105 would be, IMO, strikingly bigger, heavier and expensive than an equally fast 17-70.

That's probably why we have "slow" 18-200 and 18-250 zoom lenses. Equally slow 18-105 wouldn't be cheaper and wouldn't sell easily.

That's just what I guess. I may be wrong, of course.
Sincerely, I'd like being wrong.
09-08-2010, 05:11 PM   #10
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photozone.de has a fair amount of data on these lenses. I've been looking at the Sigma 17-70 f2.8-f4 or f4.5 depending on whether its the newest version or not. Seems like a fair compromise for a walk around lens, tending towards a faster aperture. It'll be interesting to see how Pentaxes newest lens stacks up.
09-08-2010, 05:52 PM   #11
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QuoteOriginally posted by philbaum Quote
photozone.de has a fair amount of data on these lenses. I've been looking at the Sigma 17-70 f2.8-f4 or f4.5 depending on whether its the newest version or not. Seems like a fair compromise for a walk around lens, tending towards a faster aperture. It'll be interesting to see how Pentaxes newest lens stacks up.
The DA 17-70 already beats the Sigma in sharpness across the frame and colour rendition.

Last edited by audiobomber; 09-08-2010 at 06:04 PM.
09-08-2010, 07:24 PM   #12
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QuoteOriginally posted by sherwood Quote
I'm no expert, but I believe there's probably a good reason to have this "hole in the market".

- We have the cheap kit lens, typically 18-55 f3.5-5.6
- We have more ambitious zoom lenses, faster, wider, longer, heavier and... expensive : 17-70 f2.8 and the likes...
- We have "superzooms", 18-200 or so... but those are too slow on the long end. Making them faster would mean more bulk, more weight an more money.

So, we think : I don't need 200mm. 105mm would be enough.

I'm no lens maker, but I guess a 18-105 wouldn't be cheaper to make than a 18-200 ; and for the same price, it wouldn't be faster or lighter.

Conversely, a fast 18-105 would be, IMO, strikingly bigger, heavier and expensive than an equally fast 17-70.

That's probably why we have "slow" 18-200 and 18-250 zoom lenses. Equally slow 18-105 wouldn't be cheaper and wouldn't sell easily.

That's just what I guess. I may be wrong, of course.
Sincerely, I'd like being wrong.
Let's compare Nikon's lenses, since they offer both a lens that I like (the 18-105) and a superzoom, an 18-200.

The 18-105 weighs 14.8oz (420g) per Ken Rockwell. Price per Adorama: $360.
The 18-200 weighs 19.8oz (562.3g), again per Mr. Rockwell. Price per Adorama: $760.

$400 for an extra 95mm on the long end, and an extra 5 ounces of weight. That's why I want a Pentax 18-105.
09-08-2010, 08:03 PM   #13
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According to the pf database, the Pentax 18-250 is 455g and $435.

For comparison purposes of course. You probably can't find it new anymore.
09-08-2010, 08:24 PM   #14
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Good point, Aegon. I bet a big reason these Nikkors are more expensive and heavier is they include focus motors in the lens.
09-09-2010, 08:03 AM   #15
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QuoteOriginally posted by brofkand Quote
Let's compare Nikon's lenses, since they offer both a lens that I like (the 18-105) and a superzoom, an 18-200.

The 18-105 weighs 14.8oz (420g) per Ken Rockwell. Price per Adorama: $360.
The 18-200 weighs 19.8oz (562.3g), again per Mr. Rockwell. Price per Adorama: $760.

$400 for an extra 95mm on the long end, and an extra 5 ounces of weight. That's why I want a Pentax 18-105.

You didnít mention both zoom lenses have the same widest apertures : f3.5 - f5.6. Which means the 18-200 is a faster lens than the 18-105. Itís probably 1.5 to 2 times faster at 105mm ! This explains the price and weight differences.


I understand youíd like having a 18-105 f3.5-5.6 for your Pentax camera. But whatís the max aperture at 105mm of a 18-200 f3.5-6.3 or a 18-250 f3.5-6.3 ? I donít precisely know, but I believe itís something like f5.6Ö
IMO, a 18-105 f3.5-5.6 isnít more appealing than a 18-200 f3.5-6.3


Donít believe I wouldnít like having a 18-105mm zoom lens. But this should be faster than f5.6 at the long end. What would you think of a 18-105mm f2.8-4.0 ? Of course, it wouldnít be cheap, light and compact.

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