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11-01-2012, 08:50 PM   #31
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I don't understand how the DA 55-300mm is so often praised, while the 18-135 is disrespected. They are pretty close, IME. The 18-135 arguably has better colour and contrast, and definitely has smoother bokeh. The 55-300 has slightly lower CA and slightly better sharpness, but these are only visible with pixel peeping.

Here's a test I did to compare. I don't see the extreme corner weakness that the 18-135 is supposed to show at 135mm. Keep in mind that at 135mm, the 55-300 is in the middle of its range, so has an advantage (most zooms are weaker at the extremes). Also, the 55-300mm is stopped down from f4.5 at 135mm and f5.6, while the 18-135 is wide open, so it acquits itself quite well:
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https://picasaweb.google.com/bonhommed/18135Vs55300?authkey=Gv1sRgCO7y5LGM3-rKEA#

11-04-2012, 01:09 AM   #32
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QuoteOriginally posted by audiobomber Quote
I don't understand how the DA 55-300mm is so often praised, while the 18-135 is disrespected.
Price-performance: the 55-300mm is exceptional in relation to its price while the 18-135mm is mediocre.
11-04-2012, 05:36 AM   #33
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Part of the difference in cost is due to improved features; the 18-135 has quick and silent AF, weather resistance and much more solid construction. The 55-300 feels like a consumer grade kit lens, the 18-135 feels like a pro lens, tight and solid.

I would sell my 55-300 immediately for a new version built like the 18-135, and gladly pay the price premium.
11-04-2012, 07:24 AM   #34
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QuoteQuote:
Price-performance: the 55-300mm is exceptional in relation to its price while the 18-135mm is mediocre.
Through the low end of it's range the 18-135 is a stellar performer. At 24 mm there's only one other lens that I know of that is equal in terms of MTF. We get images we can print and sell with that lens. It's a lens that can stay in your bag and be your main zoom even after you start adding primes, to fill the gap between the 21 Ltd, and 31Ltd.

So what I'm saying, is, to me it's pointless trying to compare value, if one lens is part of your "dream" kit.. and the other is a stop gap on the way there. When I just had 3 lenses, I had the 18-55, the Sigma 70-300 and 10-17 fisheye. The 18-55 and Sigma are now for the most part stay at home lenses which I should probably sell. If I was starting out and could purchase the 18-135 as a kit lens, I wouldn't even own the other two. The 18-135, if I didn't own it, I'd still want to buy it, The build quality, the DC motor and the weather sealing are all critical functions to me. It's a first lens out the door kind of lens...and sometimes it's a "the only lens I'm taking with me" kind of lens. You can do that knowing from 20mm to 40mm your IQ will be close to or exceed almost anything out there.

Every now and then I get an image like this...



Weather sealing is not really an option, where I go.

03-21-2013, 07:51 AM   #35
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Guys, I'm considering to replace my Tamron 28-75 with Pentax 18-135, but I'm hesitating...do you have any opinion that I might consider?
03-21-2013, 08:00 AM   #36
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Some considerations:

you'll be losing out on f/2.8 constant for lower-light applications, but gaining a lot wider view, and longer reach, plus adding WR, which may be a plus if you have a WR body. You also get silent focusing, which is great for situations where the dentist-drill sound of the 28-75 may be disruptive. And the 18-135 is lighter and more compact than the 28-75, with a 62mm filter as opposed to 67mm and over 100 grams lighter too.
03-21-2013, 08:18 AM   #37
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I have a k-30 body (that is WR), so having a WR lens is quite vital . However I am not certain about image quality...as a 3d artist, I am a pixel peeper, but I could sacrifice a certain IQ, because the zoom range is quite seductive...And on 2.8 the Tammy is not sharp, but softish...I try to test one 18-135, and I fell in love, I buy
03-21-2013, 08:49 AM   #38
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QuoteOriginally posted by szmatefy Quote
Guys, I'm considering to replace my Tamron 28-75 with Pentax 18-135, but I'm hesitating...do you have any opinion that I might consider?
I have both and would not give up either. The Tamron is my go to lens for indoor photography, including some portrait work. I also use it traveling usually with the DA15 if I don't think I will be in bad weather. I find it sharp and I love the fast aperture.

The 18-135 WR is what I use for hiking, travel (when I need to travel light), and any other time I think I need WR (like India during monsoon season).

My recommendation: get both.

Kevin


Last edited by klh; 03-21-2013 at 05:10 PM.
03-21-2013, 08:54 AM   #39
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I'd get both, but I'm on budget
03-21-2013, 09:21 AM   #40
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It absolutely is worth the money. I paid more than $500 for mine (when they first came out) and it is my favourite lens. My FA Ltds live on my Kr, but now and again I put the 18-135 on and am blown away with (subjectively) the quality and convenience. IMO, my best portraits have been off-the-cuff shots at 18-24mm.

My 55-300 let's me down though. From 55-210 this lens is amazing for the money. At 300 and infinity focus, also stopping down, I am nearly always let down. But that is probably my part and my technique. It let's me down because it is far better than I am
03-21-2013, 10:50 AM   #41
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QuoteOriginally posted by szmatefy Quote
Guys, I'm considering to replace my Tamron 28-75 with Pentax 18-135, but I'm hesitating...do you have any opinion that I might consider?
I have both and, if forced to own only one, would keep my Tamron 28-75, because its IQ is that much more important to me than the 18-135 WR, range and DC motor.

But like klh I would not voluntarily give up either lens.

QuoteOriginally posted by klh Quote
I have both and would not give up either. The Tamron is my go to lens for indoor photography, including some portrait work. I also use it traveling usually with the DA15 if I don't think I will be in bad weather. I find it sharp and I love the fast aperture. The 18-135 WR is what I use for hiking, travel (when I need to travel light), and any other time I think I need WR (like India during monsoon season). My recommendation: get both.
++1
03-21-2013, 12:29 PM   #42
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I kept an eye on the marketplace, waiting for a used 18-135 for around the $300-$350 range. I got one, but did have to wait for a while, and jump when I saw it. Like many here, it's my only WR lens so it's extremely useful. It's a decent performer, too.
03-23-2013, 05:11 AM   #43
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I was wondering how this lens fares for indoor snapshots of kids coupled with an bounce flash? I'm considering this over the 17-50 tamron.

Last edited by atomman; 03-23-2013 at 06:49 AM.
03-24-2013, 10:10 AM   #44
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QuoteOriginally posted by atomman Quote
I was wondering how this lens fares for indoor snapshots of kids coupled with an bounce flash? I'm considering this over the 17-50 tamron.

I am just learning to use flash, but the first time I tried bounce flash was last Xmas and I just happened to use both these lenses. The Tamron is much sharper. But for kids running around the pentax seems to focus faster...

Picture 1 is with the pentax 18-135 and Picture 2 is with the Tamron but highly cropped. It is not evenly lit or anything but I had fun using off camera flash for the first time.

Last edited by psychdoc; 11-14-2015 at 03:41 PM.
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