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12-24-2010, 09:14 AM   #1
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DA 17-70mm F4 or a combination of (DA 16-45mm and Fa 28-70mm)?

Hi forum members,

Which option would you prefer, provided that they have the same price?

Thanks,
NguyenP

12-24-2010, 09:45 AM   #2
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Get the 17-70. In this case you want quality over quantity. Having one lense that covers the same range as two inferior (not BAD, just not as good as 17-70) lenses is preferable.
12-24-2010, 10:24 AM   #3
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QuoteOriginally posted by gnaztee Quote
not BAD, just not as good as 17-70
Is the DA 17-70 really better than the DA 16-45? If the resolution tests over at photozone can be trusted, whatever slight difference exists between the lenses is in favor of the 16-45. The main advantage of the DA 17-70 is that it goes all the way to 70mm. But this advantage comes at a price: the lens is not terribly compelling at its long end, with it's resolution sliding below the excellent range at 70mm in the photozone tests. In other words, at 70mm you have a lens that is not sharp enough for landscape work and as fast as one might wish for portraits. That's why I would take the 16-45 over the 17-70. But rather than pairing it with the FA 28-70 f4, I think I would seek out longer primes in whatever range I thought I needed (and if I couldn't afford any primes, I'd just wait until I could).
12-24-2010, 12:45 PM   #4
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I've seen nice shots from the 16-45. Know nothing about the 28-75.

But I'd take the one lens solution as the IQ will likely be close, and there is a lot of overlap, as mentioned.

12-24-2010, 05:28 PM   #5
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QuoteOriginally posted by northcoastgreg Quote
Is the DA 17-70 really better than the DA 16-45? If the resolution tests over at photozone can be trusted, whatever slight difference exists between the lenses is in favor of the 16-45. The main advantage of the DA 17-70 is that it goes all the way to 70mm. But this advantage comes at a price: the lens is not terribly compelling at its long end, with it's resolution sliding below the excellent range at 70mm in the photozone tests. In other words, at 70mm you have a lens that is not sharp enough for landscape work and as fast as one might wish for portraits. That's why I would take the 16-45 over the 17-70. But rather than pairing it with the FA 28-70 f4, I think I would seek out longer primes in whatever range I thought I needed (and if I couldn't afford any primes, I'd just wait until I could).
Didn't check the tests. The 16-45 I owned prior to the 17-70 was inferior to my 17-70. And my 17-70 only falls short at 70mm when wide open, not stopped down, making it excellent for landscapes.
12-26-2010, 12:24 AM   #6
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Photozone likes the 17-70 better: "The Pentax DA SMC 17-70mm f/4 AL [IF] SDM is undoubtedly the most desirable standard zoom lens in the current Pentax lens lineup."
12-26-2010, 01:58 AM   #7
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So long as you do mean the Fa 28-70 and not the Fa* 28-70, I would go with the Da 17-70. If, however, you do mean the Fa* 28-70, I would prefer that--in a big way!
12-27-2010, 08:46 AM   #8
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QuoteOriginally posted by SpecialK Quote
I've seen nice shots from the 16-45. Know nothing about the 28-75.

But I'd take the one lens solution as the IQ will likely be close, and there is a lot of overlap, as mentioned.
I would agree with this completely. There is not enough difference in the IQ at the wide end (if any, depending upon the copy) to make the two-lens solution attractive. The 16-45 is smaller and lighter than the DA17-70, but not by all that much. I doubt that the FA* is being offered at the same price, but if it were, that brings a whole new set of factors, such as size and weight, into the equation. haven't seen too meny tests of the FA 28-70, but I also doubt that the IQ is light years ahead of the 17-70, which performs well for me. If I were going for a two lens solution, I'd pick the DA17-70 and a prime at the long end.

12-27-2010, 09:29 AM   #9
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bonjour,

le 17-70 est vraiment un superbe objectif, il soutient meme la comparaison avec le 31 mm limited sur certains tests. Rapide, silencieux et maniable, je l'adorais!
12-27-2010, 02:11 PM   #10
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I've never had the DA 17-70 so can't say anything about it. However I've had a couple of copies of the DA 16-45 f4 and they both turned out to be terrific. And my copy of the the light-weight plastic FA 28-70 f4 is all beat-up and looks really cheap but man it is one wicked sharp lens, even at f4!
12-27-2010, 02:17 PM   #11
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I've never had the 17-70 but the 16-45 never ceases to amaze me with it's sharpness and contrast for such an inexpensive piece of glass. I think it is a greatly underrated lens.
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