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01-05-2009, 04:42 PM   #1
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DA 17-70mm f4 sdm

I purchased it today as a walk-around lens. I'll post sample pics eventually and maybe even a video showcasing the sound of the internal motor, if anyone's interested. Summary so far: no more loud bzzt bzzt when auto-focusing; the black finish is similar to the textured finish of the K200D body; I'm too excited to say anything objective right now. The shot was made with M 50mm F1.7 (at F5.6) on a tripod with the 2s mirror lockup, ISO100, manual white balance.

EDIT: Here are the videos comparing the noise when these two lenses hunt.

EDIT2: I uploaded new and improved videos.

YouTube - PENTAX DA 18-55 II (take 2)
YouTube - PENTAX DA 17-70 F4 SDM [IF] (take 2)
Note also, that 17-70 doesn't extend to focus.

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Last edited by asdf; 01-15-2009 at 09:55 PM. Reason: Added links to videos.
01-05-2009, 05:32 PM   #2
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QuoteOriginally posted by asdf Quote
I'll post sample pics eventually and maybe even a video showcasing the sound of the internal motor, if anyone's interested.
I am interested... :-) And since you have both 17-70 and 18-55 II, I am especially interested in how these two compare at f/5.6 and same focal lengths (say, 24mm and 50mm) in REAL field conditions. (No test charts please! :-)))

Last edited by Ivan Glisin; 01-05-2009 at 05:42 PM.
01-05-2009, 06:44 PM   #3
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QuoteOriginally posted by Ivan Glisin Quote
I am interested... :-) And since you have both 17-70 and 18-55 II, I am especially interested in how these two compare at f/5.6 and same focal lengths (say, 24mm and 50mm) in REAL field conditions. (No test charts please! :-)))
OK, great. I'll make some outdoor shots, eventually.
01-05-2009, 08:53 PM   #4
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How much were you able to score that lens? I'm thinking of getting one for my all-purpose zoom. I'm considering getting the 16-50 again or this one.

01-05-2009, 09:13 PM   #5
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QuoteOriginally posted by soccerjoe5 Quote
How much were you able to score that lens? I'm thinking of getting one for my all-purpose zoom. I'm considering getting the 16-50 again or this one.
Well, using today's CADUSD exchange rate around 550 USD (not including taxes). However, I didn't shop for the best price online. I just went to a local store.
01-05-2009, 09:32 PM   #6
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Ouch! Man that's expensive. I can get a 16-50 for $100 more I was expecting about 300-400max!
01-05-2009, 09:40 PM   #7
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QuoteOriginally posted by soccerjoe5 Quote
Ouch! Man that's expensive. I can get a 16-50 for $100 more I was expecting about 300-400max!
Well, same here, at a different store--although the store with the better deals didn't offer this lens. I was looking for a range bigger than 16-50: here in Canada, I'd freeze my fingers juggling lenses on the go.
01-05-2009, 09:44 PM   #8
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Oh well, I hope it will come down after a while. Thanks

01-06-2009, 01:54 AM   #9
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keep us posted on this one. I'm quite into prime, but I keep my eye on this one as my holiday lens...
01-06-2009, 03:12 AM   #10
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QuoteOriginally posted by Ivan Glisin Quote
I am interested... :-) And since you have both 17-70 and 18-55 II, I am especially interested in how these two compare at f/5.6 and same focal lengths (say, 24mm and 50mm) in REAL field conditions. (No test charts please! :-)))
Congrats on the new toy!
I'm also interested in a comparison with the kit lens. SDM and extended range sure sounds nice, but I'd like to know how the IQ compares.
01-06-2009, 10:36 AM   #11
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Such 17-70 with KAF3 doesn't allow autofocus on k200d (KAF2), right?
01-06-2009, 10:40 AM   #12
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QuoteOriginally posted by club.dead Quote
Such 17-70 with KAF3 doesn't allow autofocus on k200d (KAF2), right?
It does on mine. It even works on K10D with a firmware upgrade. In the manual the following cameras are listed as supported: K20D, K200D, K10D (with 1.30 firmware) and K100D Super.
01-06-2009, 11:57 AM   #13
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QuoteOriginally posted by club.dead Quote
Such 17-70 with KAF3 doesn't allow autofocus on k200d (KAF2), right?
K200D (and K20D, K2000, K100D Super, K10D with 1.3 firmware) is KAF3 compatable.
01-06-2009, 12:11 PM   #14
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wow! Guys, could you help me with choosing between 17-70 and DA*16-50. I have my k200d with 50mm f1.4 and I do really need some more wide angles and to zoom a bit.
01-06-2009, 12:39 PM   #15
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QuoteOriginally posted by club.dead Quote
wow! Guys, could you help me with choosing between 17-70 and DA*16-50. I have my k200d with 50mm f1.4 and I do really need some more wide angles and to zoom a bit.
Maybe, best help would be to save you from blowing your hard earned money on your hobby.

But seriously...to me, DOF was a concern. See whether, in some cases, you'd really want shallower DOF between 17 and 50 which DA* would give you. As for weather sealing, 17-70 has a rubber ring in the mount and you can put some kind of cover on top of the lens itself in case of snow or rain.
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