Reviews and Problems with Sigma 18-200mm f/3.5-6.3 II DC OS HSM
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Read the specs carefully !
9 March 2014
Summary: I bought this for my Pentax K-30, and one of the factors leaning me towards this lens was the OS or optical stabilizer. When I received the lens it turned out that the manual says "The optical stabilizer is a feature not supported for Pentax cameras" and the title says OS and PENTAX. This is not as bad as it looks for me as the K-30 has an image stabilizer, but if your are using a high focal distance, you miss the lens OS.
Summary: Happy with purchase but yet to realise its full potential - still experimenting. Have the Nikon 18-300mm but this is a bit lighter and easier to carry around which was the reason I bought it actually
Summary: This lens is heavy and doesn't seem to focus as fast and cleanly as my Canon lenses. This is annoying because I mostly use it for low light action shots with occasional object between myself and the subject. It works, but get the brand name if you can afford it.
Summary: I love having an all-in-one lens for photographing children and families indoors and out! It focuses great ad long ad there is plenty of light. In low light, I get more out of focus photos, but no more than I used to with my kit lens. The lens creep is annoying for taking photos of babies laying on their backs, but once I remember to hold it in place, it's fine. The lock mechanism helps, as well. Very happy with this lens! It doesn't come off my camera now!
Summary: This is an easy to use lens, and it takes sharp pictures, even those at a distance. It does however, vignette the pictures (shadows at the corners. But since I often recrop my pictures, this isn't a problem.
Summary: The lens is actually the perfect walk-around lens as it covers a very wide-range in terms of focal length. However, since it's a third-party Sigma lens, it's glass is not the best, if not the worst. You can't really take artistic pictures with this lens as its colors aren't very nice. However, it's actually pretty nice when capturing (snapshooting) with your family and friends but I wouldn't sell a picture with that lens.
Summary: I was looking for a zoom lens for wildlife and wedding photography, and I was nervous about buying a non-Canon lens. But this Sigma fit my budget and I took the plunge. I'm moderately satisfied with its performance, but after shooting in many conditions, I see the limitations. Pros: Nice zoom. I get a nice bokah effect. Great in outdoor light. It's nice to not have to run around so much when shooting events! Pretty sharp images at mid-range zoom.