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06-10-2013, 12:15 AM   #1
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New Sigma 17-70mm F2.8-4 DC Micro HSM, the best standard zoom lens?

The new Sigma 17-70mm f/2.8-4 DC Macro HSM Lens for Pentax is now available at B&H for $499. Would you buy it? I've been searching 'the best zoom' lens for my k5 for a while. Maybe this is the one...

06-10-2013, 01:06 AM   #2
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I'd *love* 17-70mm but with fixed f2.8 aperture f4 is on the high end for low light stuff, and I do shoot a lot under such conditions.

However, if you don't plan on shooting under such conditions then go for it.
06-10-2013, 01:15 AM   #3
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QuoteOriginally posted by Zafar Iqbal Quote
I'd *love* 17-70mm but with fixed f2.8 aperture f4 is on the high end for low light stuff, and I do shoot a lot under such conditions.

However, if you don't plan on shooting under such conditions then go for it.
Darn shame it'd probably be as large as Canon's 85 1.2 in order to attain such a wide range at 2.8

Also - From what I've gathered, the 17-70 by Sigma is quite nice, fairly sharp, though IIRC, somewhat harsh bokeh. (Not uncommon among zooms) Also, it's not a true macro, I think it's 1:2.
06-10-2013, 01:47 AM   #4
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If we are talking about the new 'C' version of this lens, it seems a lot sharper than the previous two versions of that lens, at least in the center. So it looks a very decent lens. But since the previous versions were quite OK themselves, you might save some $ by getting an older version of the lens.

The new Sigma USB-dock thingy and AF adjust software sounds handy though with the new lens.

06-10-2013, 03:57 AM   #5
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My old 17-70 is a very flexible lens. It would be interesting to see if the new version is an improvement. It's also cheaper than what mine cost about 6 years ago.
06-10-2013, 04:15 AM   #6
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Best would probably still land at the laps of the 17-50 F2.8s, like the Sigma 17-50 F2.8 OS HSM.

The new 17-70 A is supposed to be a nice step up from the previous iteration though.
06-10-2013, 04:40 AM   #7
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If you read the final comment and already have one of the previous iterations of this lens, the conclusion is crystal-clear:

"„Out of the frying pan into the fire” – this idiom perhaps describes the newest moves of Sigma the best. Firstly I completely don’t understand why they launched a successor of a very well done 17-70 mm OS model. Just to gain those several dozen grams? I admit it doesn’t persuade me at all - after all this lens is not a ‘pancake’ or a small, handy instrument for which such changes would be essential and noticeable. "
06-10-2013, 09:13 AM   #8
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I appreciate efforts by lensmakers to make lenses as compact and light as possible, especially when they are to be paired with the lighter Pentax cameras that don't have grip options, like K-30, K-X, K-R, K-01, etc. So for me, I like the smaller lens length/weight of the first Sigma 17-70; I like the HSM and bigger apertures of the second generation Sigma 17-70 but it is heavier and a little longer, so if I could get the benefits of the second version in a smaller package like the first version, then the newest version seems to be a very compelling option.

Version 1: Length: 82.5mm, Weight: 455 grams
Version 2: Length: 88.9mm, Weight: 535 grams
Version 3: Length: 82mm, Weight: 470 grams

06-10-2013, 09:34 AM   #9
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Here's a comparison of the different apertures throughout the zoom range of the 3 different versions of the Sigma 17-70, courtesy of the Lenstip review of the Contemporary Zoom lens:

06-10-2013, 09:46 AM   #10
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@seventysixersfan, you're tempting me more and more with your arguments in favor of the new Contemporary lens. Looks great, I just might have to spring for it soon!!
06-10-2013, 11:03 AM   #11
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@yellowbrick, if you do get it, be sure to let us all know how it handles and how good the image quality is. I want this lens too but I'm not sure I can justify having it and my DA 18-135 WR. Seems like too much overlap for not that much benefit-- yes, I assume/hope the Sigma 17-70 would be a little sharper, and it has slightly faster aperture and can focus closer, but I'm not convinced I would need both lenses... of course, that's my wife talking, and my LBA says otherwise...
06-10-2013, 10:30 PM   #12
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Thanks to you all for your helpful comments. I'll probably stay with my DA18-135mm for outdoor, and Tamron 28-75mm F2.8 for indoor/people shots.
06-10-2013, 10:58 PM   #13
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QuoteOriginally posted by David L Quote
I'll probably stay with my DA18-135mm for outdoor, and Tamron 28-75mm F2.8 for indoor/people shots.
I have both. Good lenses for the job. My only gripe is that sometimes the 28-75 just isn't wide enough for some indoor event shooting situations, so I have thought of getting lenses like the Sigma 17-70 or the Pentax 17-70. But I can live without them.
06-10-2013, 11:12 PM   #14
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QuoteOriginally posted by rawr Quote
I have both. Good lenses for the job. My only gripe is that sometimes the 28-75 just isn't wide enough for some indoor event shooting situations, so I have thought of getting lenses like the Sigma 17-70 or the Pentax 17-70. But I can live without them.
Agreed! Let's hope Pentax will soon release a good F2.8 zoom lens that covers ~20-70mm range.
06-10-2013, 11:46 PM   #15
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QuoteOriginally posted by David L Quote
that covers ~20-70mm range.
Why stop at 70mm? How about ~20-105, and add the same AF motor as the 18-135, plus WR. Even if it were a constant f4, covering ~20-105 would be great for shooting gigs.
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