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11-10-2012, 09:59 PM   #1
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Image quality: DA 16-45 f4 or FA 28-105 f4-5.6 or something else?

Hi all!
Now i need a AF lens for my K5. And i have some choices in my country
  • DA 16-45 f4: ~200$
  • Tamron 17-50 f2.8: ~250$
  • Sigma 18-50 f2.8 Macro: ~300$
  • FA 28-105 f4-5.6 PZ: ~100$
There're some review of above lens, but i can't decide what's suitable len for me @_@
My taste:
  • I like lanscape and macro (or closeup). Some time i use my gear to shot some portrait for my family, but not usually
  • I want a AF lens which can correct AF when use. I hate my lens back or front focus @_@.
  • I know the yellow tone in images taken by Tamron, but it's ok with me.
  • I offten use f5.6-8 when shotting, althought i have Super takumar 50f1.4. When shoting in low light, i'll use flash and tripod.
  • I want my images are sharp, very sharp
  • I want my images are full of color, even b/w images, lol
And there're my situation :
  • I was used tamron with canon a year ago, and i like it's build. But when it has been back/front focus, i tired and sold the lens.
  • I never hand on DA16-45, so i wonder if it's build like kit DAL 18-55 or not?
  • DA have 16mm, it's good for landscape, but i don't now IQ when shot at 16mm with K5
  • And i readed some where that DA16-45 have issue with flash @_@
  • I like the sharpness of Tamron but i scare it's AF issue
  • I don't know the color tone of Sigma, it's better than Tamron, DA16-45, or not???
  • FA 28-105 f4-5.6 PZ is sharp, good build, and sheapest. But seem only sharp at center
So, i want to collect comment here to help "bright my head" and choice suitable len
Thanks all

11-10-2012, 10:21 PM   #2
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I have only owned the DA 16-45 so can only comment on that one.

Overall build quality is a little better than the kit lens (18-55). When the barrel is fully extended you can feel a little movement with the inner barrel if you try to move it back and forth.

For the flash - the barrel extends on this lens as you zoom out to shorter focal length and will block the pop-up flash from around 30mm or less.

The rendering is fantastic - it carries the beautiful Pentax colors very well - like it much better than any Sigma lens I have tried.

Image quality is very good in my opinion - nice crisp clear images at all focal lengths. You will however get some barrel distortion at the wide end.

All in all I feel it is a very good lens - actually quite a good bargain when the used prices are around US$200.

Here is the review page for the DA 16-45:

SMC Pentax-DA 16-45mm F4 Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database
11-10-2012, 10:32 PM   #3
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I have the DA 16-45/4 and the FA 28-105/4-5.6. They are close to the same size, the 16-45 is a little wider and lighter. The range of the 16-45 works a lot better for my use. It's a good replacement for an 18-55: sharper, more micro-contrast, quick shift, constant f4.
It's built better than the 18-55 L version but otherwise, pretty ordinary. Close focus is not quite as close as the 18-55. It is an inexpensive way to get as wide as 16mm. It has some CA, correctable in software. It extends fully at 16mm, the opposite of many lenses. The front of the lens will block the popup flash at wider angles, I think wider than 20mm. Check your K-5 manual for that. With a shoe-mounted flash, it works fine. I think it's a great landscape lens.

I rarely use the 28-105 because of the range. It's built very well except for the power zoom switch, broken or missing on many copies. Mine was cheap because of a broken switch. It works fine without the switch. When I've used it, I never noticed any big flaws in images.
11-11-2012, 07:42 AM   #4
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@storm.; Just.: Thanks
Do you have any AF issue with DA 16-45? And how if use DA16-45 in lowlight but use flash?

11-11-2012, 07:56 AM   #5
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I would probably go for the Tamron 17-50. Plus it is also F2.8, making it faster than the DA lens. The reviews for it are great and it is real bang for the buck if you can get it for $250.

The 28-105 I dont think belongs in that list. From the first three, I think you are looking for a general purpose walk around lens and at 28mm you are almost at normal view. In my opinion, this lens simply isn't wide enough.
11-11-2012, 08:02 AM   #6
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I have the FA 28-105 PZ and I can say it's a bit sharper than the kit lens but a whole stop slower too. It's a really, really nice outdoor/daylight lens but falls short on the wide end of the range compared to the 16-45. If you're more of the landscape type, the DA16-45 will surely satisfy. The FA is a good alternative to the kit, especially if you do portraits more often, but you're going to need a lot of space for the background in order to get creamy bokeh with it.

I'm lucky I got a copy of the 28-105 with all the parts intact. It's really heavy on the K-x though. For the criteria you're looking for however, I would vouch for the 16-45. It's sharper, faster, and the updated coatings (or construction....) make better color rendering than most FA lenses.
11-11-2012, 08:08 AM   #7
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The tamron 17-50 is the best lens for IQ and its a fast F2.8 and its cheap The 16-45 is not as fast and costs more but its not far behind in image quality and is better built and offers manual quick focus and prob better build quality. I went with the Tamron but you you would be happy with either Im sure
11-11-2012, 08:36 AM   #8
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QuoteOriginally posted by fanofcc Quote
@storm.; Just.: Thanks
Do you have any AF issue with DA 16-45? And how if use DA16-45 in lowlight but use flash?
I had no AF issues at all with the lens. I have more issues with the 4X more expensive DA* 16-50.

To use flash with the 16-45 at the wider focal lengths, the only option would be to use an external flash.

11-11-2012, 08:43 AM   #9
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QuoteOriginally posted by fanofcc Quote
Now i need a AF lens for my K5.
  • Tamron 17-50 f2.8: ~250$
My taste:
  • I want a AF lens which can correct AF when use. I hate my lens back or front focus @_@.
  • I know the yellow tone in images taken by Tamron, but it's ok with me.
  • I want my images are sharp, very sharp
And there're my situation :
  • I was used tamron with canon a year ago, and i like it's build. But when it has been back/front focus, i tired and sold the lens.
  • I like the sharpness of Tamron but i scare it's AF issue
The Tamron is as sharp as it gets, especially at 24mm.
AF is noisy, but fast.
With the K5, you can enter any FF/BF correction once, and then forget about it.
I often use mine on a K-x, which doesn't have official FF/BF correction.
There, for critical shooting at f/2.8, Live View CDAF is slow, but very accurate.
11-11-2012, 09:13 AM   #10
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For how you described your needs, I would recommend the 16-45mm. Mine is very sharp.
11-11-2012, 10:08 AM   #11
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For your uses, I would recommend a 17-70, either a Sigma or Pentax. The pentax is a bit more money but it has better sharpness at 17mm and 70mm, however the old sigma 17-70 (f2.8-4.5) has really good macros. if you are going to shoot landscapes a lot more than macros, get the 16-45 or pentax 17-70 which still ahs an awesome macro
11-11-2012, 06:54 PM   #12
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Original Poster
Thanks all
I want to buy a 2nd zoom lens for my K5 which avaible in my country. There're some seller who want to sell their lens, which listed above.
I'll consider your useful comments!

ps: still lookafter more and more comments
11-11-2012, 08:04 PM   #13
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Love my 16-45. Noticable improvement over 18-55 kit lens





11-11-2012, 08:24 PM   #14
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@pentaxian_tmb: nice shot
Could you show me some picture shoted in lowlight (you party, night scene...)?
Thanks
11-11-2012, 08:34 PM   #15
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1st shot above was low light with monopod. Second shot was 30 second exposure on tripod. 16-45 is a great landscape and walkaround lens, but would not be my lens of choice for doing low-light handheld photography.
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