Canon Lenses: Sigma 18-200mm, Sigma 50mm

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grouchyturtle

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Sigma 18-200mm f/3.5-6.3 DC AF OS Zoom Lens for Canon Digital SLR Cameras

The Sigma 18-200mm high-zoom-ratio lens is designed exclusively for Canon digital SLR cameras and is capable of covering a wide range of focal lengths, from wide-angle to telephoto. Two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses correct for all types of aberrations, letting Sigma house the extended-range super-zoom lens in a compact and lightweight body that measures 70mm in diameter and 78.1mm long and weighs a mere 14.3 ounces. The new lens coating, meanwhile, reduces flare and ghost--a common problem shared by many digital cameras--while also creating an optimum color balance. Other details include a minimum focusing distance of 45cm (17.7) at all focal lengths, a high zoom ratio of 11:1, and a maximum magnification of 1:4.4. The lens design incorporates an inner focusing system that prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal-shaped lens hoods. In addition, the overall length of the lens never changes during focusing, making the lens convenient to handle and easy to use. Finally, the lens's zoom lock switch eliminates "zoom creep" during transport--a convenient addition when traveling.


Product Description

Features

  • Sigma’s own unique technology OS (Optical Stabilizer) function
    The 18-200mm f3.5-6.3 OS is equipped with Sigma’s own unique OS (Optical Stabilizer) technology. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera by moving an optical image stabilizing lens group, to effectively compensate for camera shake. It also automatically detects panning movement of the camera and compensate for camera shake when shooting moving subjects such as motor sports.
  • Excellent Optical Performance
    A Special Low Dispersion (SLD) lens and three aspherical glass elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range. The super multi-layer lens coating reduces flare and ghosting while producing the best color balance.
  • Enables close-up photography
    This lens has a minimum focusing distance of 45cm through entire zoom range with a maximum magnification of 1:3.9 making it very convenient for taking close-up pictures.
  • Inner focusing system
    Because the front of the lens does not rotate, circular polarizing filters and a petal-type hood can easily be used.
  • Magnification scale
    A magnification scale is displayed on the lens barrel, ensuring ease of use.
  • Zoom lock switch mechanism
    A zoom lock switch mechanism is provided to prevent the lens from creeping due to its own weight.


$300...OR BEST OFFER (plus shipping)
18mm.jpg

Sigma 50mm f/2.8 EX DG Macro Lens for Canon SLR Cameras


Sigma launched its first standard 50mm macro lens in 1990, and followed it up with an improved model in 1998. The advent of digital SLR cameras, however, required updated optical technology and a better imaging performance. Enter the latest incarnation of the 50mm macro lens, with an improved design that corrects for various aberrations. Designed exclusively for Canon SLR cameras, this macro lens is specially coated to get the best possible color balance while cutting down on ghosting caused by reflections from the digital image sensor. The lens also includes a floating focusing system, which allows you to precisely photograph objects throughout the entire focusing range. Most importantly, this standard macro lens makes it possible to enjoy better communication with your subject. When viewing through the camera's finder, you'll be able to move the subject and make precise adjustments. For example, the lens offers a close working distance of 7.4 inches, making it extremely convenient to take close-up pictures of a fossil or other inanimate objects. Other details include a minimum aperture of f/45 that provides a greater depth of field than most lenses, a screw-in lens hood that makes it easy to attach circular polarizing filters, and a 46.8-degree angle of view.
Specifications


  • Focal length: 50mm
  • Maximum aperture: f/2.8
  • Lens construction: 10 elements in 9 groups
  • Angle of view: 46.8 degrees
  • Number of diaphragm blades: 7
  • Minimum aperture: f/45
  • Minimum focusing distance: 7.4 inches
  • Maximum magnification: 1:1
  • Filter size: 55mm
  • Corresponding mount: Canon
  • Dimensions: 2.8 inches in diameter and 2.6 inches long
  • Weight: 11.3 ounces

$225...OR BEST OFFER (plus shipping)
50mm.jpg
 
Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras

Designed exclusively for Canon digital SLR cameras, the ultra-wide-angle 10-20mm offers a view from 102.4 to 63.8 degrees, making it ideal for landscape photography and other vast applications. The lens is distinguished by its three special low dispersion (SLD) glass elements, which effectively compensate for color aberration, and its aspherical lenses, which provide maximum correction for distortion and various aberrations. As a result, the lens produces an extremely high image quality throughout the entire zoom range. The HSM-equipped models, meanwhile, produce fast autofocus (AF) speeds and quiet shooting while still letting you perform full-time manual focus. Other details include a minimum focusing distance of 9.4 inches at all focal lengths and an integral petal-type hood to block out extraneous light.

Lens Elements and Coating
The new multilayer lens coating and lens design reduce flare and ghost--a common problem with digital cameras--while also creating an optimal color balance throughout the entire zoom range. At the same time, the lens offers three SLD glass elements that effectively compensate for color aberration, along with a piece of glass mold and two hybrid aspherical lenses that offer excellent correction for distortion and all types of aberration.

Inner Focusing System and HSM

The lens incorporates an internal focusing system that eliminates front lens rotation, letting you use a petal-type hood to protect from additional glare. And models equipped with a Hyper-Sonic Motor (HSM) produce silent, high-speed autofocus and full-time manual focus for Sigma, Canon, and Nikon D-mount lenses.

Best Consumer Lens

The Sigma 10-20mm lens is so respected that it was named the best consumer lens in Europe (2006) by the Technical Image Press Association (TIPA), a collection of 31 publications from 12 countries. According to TIPA, the 10-20mm lens offers a versatile range of wide-angle focal lengths, a good optical performance, and a budget price, making it an excellent investment for owners of DSLRs with APS-C format sensors. Its sharpness remains constant throughout the zoom range, and its compact size makes it an ideal companion for shooting travel, landscapes, or architectural subjects.

  • Lens construction: 14 elements in 10 groups
  • Angle of view: 102.4 to 63.8 degrees
  • Number of diaphragm blades: 6
  • Minimum aperture: f/22
  • Minimum focusing distance: 9.4 inches
  • Maximum magnification: 1:6.7
  • Filter size: 77mm
  • Dimensions: 3.3 inches in diameter and 3.2 inches long
  • Weight: 16.4 ounces
$250...OR BEST OFFER (plus shipping)
10mm.jpg
 
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