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11-28-2013, 02:26 AM   #1
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Need better glass for my new K-5 IIs

Just got a new K-5 IIs and want to get some better glass....

I am trying to answer my own question through research but all the lens reviews don't really provide a definite answer.
I am interested in the best glass for the money in the short and medium zoom range with 2.8 constant aperture.

The Pentax lens lineup is nice but I really do not want to experience a drive system failure and I am learning that there are some really nice third party lenses out there.

I know asking for opinions may be as varied as the reviews but I still find it very valuable...

11-28-2013, 03:03 AM   #2
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The new line of sigma lenses (contemporary, art) are excellent and relatively inexpensive.
11-28-2013, 03:07 AM - 1 Like   #3
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I assume you're also closely studying photos on the PPG, PBase, and Pixel-peeper. That pretty much will provide an answer.

After doing so (and trying a number of lenses), I Personally decided I don't like Sigma or Tamron all that much, while I like Tokina and Pentax (as well as Zeiss, Sony, Leica, Canon, and Nikon - but they're mostly irrelevant).


I also decided the * zooms were the best, and DA*16-50 and 50-135 made more sense to me than the FA*28-70 and 80-200. So my short answer is anything with a *, or what should've been a * (e.g. K200/2.5), any FA Ltd, many DA Ltds., and a few other lenses - usually mid-priced - that just happen to be really good.

If I had your collection (I'm assuming your signature is current) I'd dump the FA50/1.4 and get an FA43, DA*55, or K/A 50/1.2. I'd also sell the DA55-300 and get the DA*50-135, plus a 200 or a 300. Also get the DA*16-50 or a roughly equivalent lens. And I'd consider the DA15, FA*24, and DA35/2.4, as well as the Cosina 100/3.5 or a similar macro.


The SDM may fail on you someday, and it may fail on me someday. But I decided a few years ago it was worth the risk to get the tools I really needed. And I would have missed SO MANY good photos if I hadn't bought those 2 lenses.
11-28-2013, 06:23 AM - 1 Like   #4
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QuoteOriginally posted by skid2964 Quote
I am interested in the best glass for the money in the short and medium zoom range with 2.8 constant aperture.
Pentax 16-50 if you want WR. Tamron 17-50 if you don't. Sigma 17-70 if you can live with f4 at the tele end.

Pentax 50-135 or Sigma 50-150 (used) or a combination of Pentax 70 and Pentax 100 macro WR, of Pentax 77 if you can afford it.

Pentax 60-250 if you want more reach and can live with f4, or Tamron 70-200 if you want less reach, less build quality, but faster.

Any of the FA or DA limited will provide what you want if you can look at primes.

11-28-2013, 08:31 PM   #5
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You make some good points, all to be considered... I also just updated my sig.
You have so far inspired me to replace my FA 50 1.4...

QuoteOriginally posted by DSims Quote
I assume you're also closely studying photos on the PPG, PBase, and Pixel-peeper. That pretty much will provide an answer.

After doing so (and trying a number of lenses), I Personally decided I don't like Sigma or Tamron all that much, while I like Tokina and Pentax (as well as Zeiss, Sony, Leica, Canon, and Nikon - but they're mostly irrelevant).


I also decided the * zooms were the best, and DA*16-50 and 50-135 made more sense to me than the FA*28-70 and 80-200. So my short answer is anything with a *, or what should've been a * (e.g. K200/2.5), any FA Ltd, many DA Ltds., and a few other lenses - usually mid-priced - that just happen to be really good.

If I had your collection (I'm assuming your signature is current) I'd dump the FA50/1.4 and get an FA43, DA*55, or K/A 50/1.2. I'd also sell the DA55-300 and get the DA*50-135, plus a 200 or a 300. Also get the DA*16-50 or a roughly equivalent lens. And I'd consider the DA15, FA*24, and DA35/2.4, as well as the Cosina 100/3.5 or a similar macro.


The SDM may fail on you someday, and it may fail on me someday. But I decided a few years ago it was worth the risk to get the tools I really needed. And I would have missed SO MANY good photos if I hadn't bought those 2 lenses.
11-28-2013, 08:33 PM   #6
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At what point does the Sigma 17-70 force you down from f2.8? can it do 2.8 from at least 17 to 50mm?

QuoteOriginally posted by bdery Quote
Pentax 16-50 if you want WR. Tamron 17-50 if you don't. Sigma 17-70 if you can live with f4 at the tele end.

Pentax 50-135 or Sigma 50-150 (used) or a combination of Pentax 70 and Pentax 100 macro WR, of Pentax 77 if you can afford it.

Pentax 60-250 if you want more reach and can live with f4, or Tamron 70-200 if you want less reach, less build quality, but faster.

Any of the FA or DA limited will provide what you want if you can look at primes.
11-28-2013, 08:36 PM   #7
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QuoteOriginally posted by skid2964 Quote
At what point does the Sigma 17-70 force you down from f2.8? can it do 2.8 from at least 17 to 50mm?
No way, it drops 2.8 very early. I have the older 17-70 2.8-4.5 and it's only 2.8 until about 20mm.
11-29-2013, 06:10 AM   #8
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QuoteOriginally posted by skid2964 Quote
At what point does the Sigma 17-70 force you down from f2.8? can it do 2.8 from at least 17 to 50mm?
I could not find the exact information you ask but assume it begins closing the aperture before 30mm.

11-29-2013, 07:03 AM   #9
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Found it on the other site. Loses 2.8 before you get to 24mm, Kind of a bummer
Sigma 17-70mm f/2.8-4 DC Macro OS HSM | C review: Digital Photography Review
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