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11-17-2015, 09:27 AM   #1
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[Recommendation] Looking for a new lens

Hello everyone !

Im looking for a new lens for my Pentax K5-II

The kind of lens im looking for it's most for an average/everyday lens. Im not looking for something to do Macro or Zoomed shot from far.

Most of my shots are with people standing =)

Right now I have thoses 3 lens :

- Pentax 18-55mm (That was coming with my camera)
- Tamron 18-200mm F/3.5-6.3 (IF) MACRO 64-A14 (The one im using the most right now)
- Tamron 70-300mm 1:4-5.6 TELE-MACRO (1:2) A17 (Im rarely using that one since im not doing zoomed/far shot often)

We told me that Tamron 18-200mm was a cheap lens, not the best and I could have way much better is that true ?

Im looking for something that could give a better sharpnest, colors, etc. than Tamron 18-200mm.

I thought maybe about getting Pentax SMC DA 18-135 mm but my question is :

Is the difference between Tamron 18-200mm vs Pentax 18-135mm pretty much difference or there's almost no difference at all ?

Also feel free to give me other recommandation other than what I said here.

Thank you very much for reading me! Thanks for your help

Friendly, Zeo

11-17-2015, 10:36 AM   #2
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QuoteOriginally posted by Zeo Quote
Is the difference between Tamron 18-200mm vs Pentax 18-135mm pretty much difference or there's almost no difference at all ?
IMO if you want to step up to a higher tier of image quality, you should turn away from superzoom lenses and go for something like the Sigma 17-70mm F2.8-4 or the Pentax 16-85mm F3.5-5.6. Both are sharp, fast to focus, and still pretty versatile.

HD Pentax-DA 16-85mm F3.5-5.6 Review - Introduction | PentaxForums.com Reviews
Sigma 17-70mm F2.8-4 Contemporary Review - Introduction | PentaxForums.com Reviews

You do get in-camera correction profiles with the Pentax lens, so that's something to consider if you're mainly a JPEG shooter. On the other hand, the Sigma is up to a stop faster and can do better close-ups.

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11-17-2015, 11:20 AM   #3
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QuoteOriginally posted by Adam Quote
go for something like the Sigma 17-70mm F2.8-4
That's exactly what I was going to say!

I love my 17-70, it's definitely at least 3 steps up from an 18-55...
  1. Wider (17mm vs. 18mm)
  2. Longer (70mm vs 55mm)
  3. Faster (f/2.8-4 vs. f/3.5-5.6)
11-17-2015, 11:22 AM   #4
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I would say maybe the 16-85.

11-17-2015, 11:25 AM   #5
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QuoteOriginally posted by Zeo Quote
I thought maybe about getting Pentax SMC DA 18-135 mm but my question is : Is the difference between Tamron 18-200mm vs Pentax 18-135mm pretty much difference or there's almost no difference at all ?
I haven't owned the 18-200, but I do have the Pentax 18-135, and it is definitely one sharp lens. It probably depends on the camera body/lens combo. I remember that after I upgraded to the K-5IIs, the 18-135 seemed to be even better with it! I don't know if it was the upgraded AF, the lack of an OLPF, or maybe the lens just needed a calibration with my previous K-5, but I definitely noticed an improvement.
11-17-2015, 11:38 AM   #6
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QuoteQuote:
Im looking for something that could give a better sharpnest, colors, etc. than Tamron 18-200mm.I thought maybe about getting Pentax SMC DA 18-135 mm

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/179869-da-1...at-can-do.html
11-17-2015, 01:37 PM   #7
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I think it's time to go prime. Either of the 35s would do: either the ltd or the plastic fantastic.
11-17-2015, 03:01 PM   #8
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You should probably mention what you want to spend. We'll suggest spending twice as much anyway but it's tradition.

11-17-2015, 04:15 PM   #9
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I've got an 18-135 and a K-5II and it's a great package. My ten year old 18-55 that shipped with my K100D isn't nearly as nice to shoot with. So I'd give that a thumbs up. The Tamron 17-50 f2.8 seems like a great all-arounder as well as the lenses mentioned above, especially if you sold your 18-55 and 18-200 lenses and kept the 70-300.

Last edited by pres589; 11-25-2015 at 03:11 PM.
11-17-2015, 05:39 PM   #10
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The cheap Tamrons and the n18-55 kit lens are remarkably good value and quite sharp, but for a bit more character and DOF control in your shots I'd go for a prime. You've got all focal lengths covered already, and a prime will make you think more about what you're shooting. Personally I love old manual primes which cost peanuts, but if you want AF and have the cash, look at the 35mm f/2.8. I'd avoid the 35mm f/2.4 as it's no better than the kit 18-55. If on a budget look at the 50mm f/1.8.
11-25-2015, 02:22 PM   #11
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QuoteOriginally posted by Darley Quote
I'd avoid the 35mm f/2.4 as it's no better than the kit 18-55.
Don't agree. The DA 35 f2.4 is quite a bit sharper, both in the centre and across the frame, as well as faster. It has good colour rendering and contrast, minimal CA and good flare resistance (just as well, because it doesn't come with a hood). It's not called the plastic fantastic for nothing.

You don't need to pixel-peep: coming from just about any consumer zoom, you will notice the difference immediately - even at f5.6 or f8 where most zooms are at their best.

See the photozone review: Pentax SMC DA 35mm f/2.4 AL - Review / Lens Test

If you have one of the better f2.8 zooms in the normal range (e.g. Tamron 17-50, Sigma 24-70, Pentax DA*16-50) there is less of a case for the 35. But with a kit lens or a superzoom its a worthy companion.

11-25-2015, 09:21 PM - 1 Like   #12
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I have the 18-135 and it is the fastest focusing lens I own. The DC motor is extra fast and silent. I think you would definitely see a difference between the 18-135 and the Tamaron. Keep in mind the 18-135 is a zoom and needs stopping down for really sharp images. Now if you are shooting mainly people there are other options too. I use my DA*16-50 and DA*50-135 for shooting people. My DA*50-135 is probably my sharpest lens. The 16-85 may be a good fit for you if you do not need the extra reach. It is a great lens with excellent build quality and the silent DC motor. Both the Signal 17-70 and 17-50 are great options as well. The 17-70 gives you extra reach at the cost of light while the 17-50 gives you a constant f2.8 apeture but only goes to 50mm. If I am traveling light and can only take one lens it is the 18-135. Here is one at 135mm and one at 18mm.
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11-27-2015, 05:05 AM   #13
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Best way I would imagine is go through your exif data and find what range you generally work in and buy the best you can.
Personally I'm around 20-40mm in most of mine.
I would look at the hd da 16-85mm or a good limited prime.
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