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Lenses

Most Recent: 
  • Lens Test: Sigma 18–200mm f/3.5–6.3 II DC OS HSM

    Sigma slims down its top all-in-one

    Released in October of 2011, this second iteration of Sigma’s stabilized 11.1X all-in-one zoom ($499, street) offers two seemingly significant upgrades: a high-tech FLD glass element, plus Sigma’s silent HSM focusing motor. This APS-C-only zoom is the full-frame equivalent of about 30–320mm, depending on your camera's body.

  • The Future of Photography: A Look at the Latest Trends in Camera Technology

    What's in store? High-resolution images, smaller and smarter gear, and instantaneous wireless image transfer

    With so many new cameras and lenses launched recently, now is the best time to take a look at how the latest technology will likely play out in the coming year. We see three trends reshaping photography in the near future: Lenses evolving to accommodate the needs of video capture, sensors emerging in new sizes and designs, and Wi-Fi connectivity being built into more cameras.Remaking the Lens:

  • Glass Glossary: Definitions For Common Lens Terms

    What the lingo in our lens tests means

    Apochromatic (APO): A lens group designed to correct chromatic aberrations for three wavelengths (usually red, green, and blue) rather than just one or two.Aspheric: A lens element with a non-spherical curvature on one or both sides. Aspherics typically have less curvature at the edges than at the center. They can reduce optical aberrations and distortion. And because a single aspheric can replace several spherical lenses, it cuts down on internal reflections that can cause flare.