Reviews and Problems with Sigma 17-70mm F2.8-4 DC Macro OS HSM
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Sigma 17-70mm f/2.8-4 DC Macro OS HSM le
Dr. Moto, B&H Photo
27 August 2014
Excerpt: I tested the lens and had a problem with focusing. The problem possibly could have been rsolved with the USB dock which I didn't have so I sent the lens back. Two stars for build quality and size.
Summary: Totally unimpressed. I bought this for my K-5 and it is worse than my $200 dollar kit lens. I bought this because I wanted an upgrade from my 18-50mm kit, but boy was this the wrong choice: Higher than average noise levels in night photography Blurry images at 17-20mm Distortion at the edge of the...
Excerpt: I don't know why, but I had a different experience than most others here with the sigma 17-70 contemporary. First I tested it for sharpness against my 18-55 WR kit lens by shooting a test sheet/chart with each lens (using a K-30).
Summary: Well, I just got this lens in the mail "Brand New" for my Sony a77. Immediately I decided to put it to the test. I have to say that image quality was good when images were in focus. Initially I tested the lens indoors. I ran the test against my Sony 16-50mm f/2.8.
Summary: I really wanted to like this lens. On paper, it looks like a near perfect everyday lens. The relatively fast aperture, nice wide to medium zoom range, and bonus close focus distance make it sound like something you could keep on your camera most of the time.
Conclusion: I wanted to love this and use it as a general purpose lens, but it's VERY soft, much heavier than it's non-OS predecessor and expensive for what it is. Maybe I got a bad one (which seems to happen a bit too much to me with Sigma lenses). Steer clear.
Pros: Reasonably well built.
Cons: Everything else. Soft, heavy, expensive for what it is
Summary: Purchased as a replacement for my ageing 17-85mm Canon which had a contact fault. However, in tests the sigma was very soft in comparison. Focus accuracy was poor too. So returned it and had the Canon repaired instead.
It is quite soft at 17mm and oddly stopping down the aperture does not make things noticeably better. The good thing is that it
CraigM "craig13393", Amazon
25 February 2012
Summary: My conclusion on this lens is that all the reviews are right. It is quite soft at 17mm and oddly stopping down the aperture does not make things noticeably better. The good thing is that it is still a lot better than a Pentax 18-55 kit lens so can be seen as a genuine step-up lens, but at £329 it...
Summary: I had high hopes for this lens when I purchased it but ultimately I was left disappointed. I'd previously had the 17-50 EX 2.8 on a Minolta 7D and a Canon 30D and that was sharp at all focal lengths when stopped down. I was expecting much the same from the new 17-70 but it just wasn't the case.