All Lenses :

• Compact, high performance L-series super-telephoto zoom makes it ideal for sports and wildlife photography.
• One fluorite and one super UD lens element provides excellent correction of chromatic aberration throughout the entire zoom range, helping to deliver high-quality images with high resolution and contrast.
• Rotation-type zoom ring allows for more precise composition and excellent balance when handholding.
• Inner focusing, ring USM, a high-speed CPU and optimized AF algorithms for fast and accurate autofocusing.
• Optical Image Stabilizer provides up to four shutter speed steps of correction*.
• Three image stabilization modes (standard, panning, and during exposure only) provide outstanding results for a wide range of shooting situations. 

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• Optical Image Stabilizer
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• High-performance L-series ultra-wide-angle zoom lens with constant f/2.8 maximum aperture.
• All-new optical design for significant improvements in outer and corner sharpness.
• Subwavelength Coating (SWC) and Air Sphere Coating (ASC) help to significantly reduce flare and ghosting.
• Highly resistant to dust and water intrusion, enabling shooting even in harsh conditions*.
• Circular aperture (9 blades) helps deliver beautiful, soft backgrounds.
• Inner focusing, ring USM, high-speed CPU and optimized AF algorithms for fast and accurate autofocusing.

• High performance L-series ultra-wide zoom lens in a compact design and Optical Image Stabilizer for up to four stops of correction*.
• Three aspheric lens elements, including a large-diameter aspheric lens, help correct aberration.
• Two UD lens elements help reduce chromatic aberration from the center to the periphery throughout the entire zoom range for excellent image quality with high resolution and contrast.
• Optimized lens coatings help provide excellent color balance while also helping to minimize ghosting. 
• Highly resistant to dust and water intrusion, enabling shooting even in harsh conditions**.
• Inner focusing and ring USM for silent, fast and accurate autofocusing.

• Focal Length and Maximum Aperture: 24-70mm, 1:2.8
• Lens Construction: 18 elements in 13 groups
• Diagonal Angle of View: 84° - 34°
• Focus Adjustment: Inner- focusing with USM
• Closest Focusing Distance: 0.38m/1.25 ft.
• Zoom System: Rotating Type

• L-series wide-angle single focus lens introduces Canon's newly-developed optical element, BR Optics*, which helps produce impressively high quality images by helping to maximize performance and reduce chromatic aberration.
• Two aspheric lenses and one UD lens help provide a high level of image quality.
• Improved durability for use in harsh environments helps ensure reliability and dependability.
• Subwavelength Coating (SWC) helps significantly reduce lens ghosting and flare.
• Shortest minimum focusing distance in its class (0.28m) and increased maximum magnification (0.21x) help expand the range of expression, especially when capturing close-up subjects.
• Fluorine coating on front and rear lens surfaces helps reduce smears and fingerprints.

• Two high-refraction lens elements
• 50mm focal length
• 1:1.4 maximum aperture
• 46° diagonal angle of view
• 0.45m / 1.5 ft. closest focusing distance

Note that refurbished products do come with the standard warranty; however, refurbished products are final sale.

• Revised Optics for a Lighter Super Telephoto EF L Lens.
• Continues Strong Tradition of Image Quality Associated with L Series Lenses.
• Super Spectra Coating (SSC) and Air Sphere Coating (ASC) Minimize Ghosting and Flare.
• Increased Heat Shielding Measures for Reliable, Longer Shooting Outdoors.
• Dust- and Water-resistant with Fluorine Coatings for Use Even in Harsh Conditions.
• Customizable Electronic Focusing Ring. 
• Revised Optics for a Lighter Super Telephoto EF L Lens.
• Continues Strong Tradition of Image Quality Associated with L Series Lenses.
• Super Spectra Coating (SSC) and Air Sphere Coating (ASC) Minimize Ghosting and Flare.
• Increased Heat Shielding Measures for Reliable, Longer Shooting Outdoors.
• Dust- and Water-resistant with Fluorine Coatings for Use Even in Harsh Conditions.
• Customizable Electronic Focusing Ring. 

• High-speed autofocus for shooting stills and smooth, near-silent autofocus when shooting video are achieved by incorporating NANO USM technology.
• New Lens Information Display shows focusing distance, focal length and shake amount
• One UD Lens helps reduce chromatic aberration and delivers outstanding high-resolution and high-contrast results.
• Image Stabilizer effect at up to 4* stops of shake correction helps capture sharp images
• Circular aperture (9 blades) helps deliver beautiful, soft backgrounds.
• Full-time manual focus allows manual focus adjustment while in AF Mode.

• Optical Image Stabilization at up to 5 Stops* of Shake Correction.
• One Fluorite Element and Two UD Elements for High Image Quality.
• Highly Resistant to Dust and Water, and Improved Durability Even in Harsh Conditions.
• Three Image Stabilization Modes for Outstanding Results.
• IS Mode 3 Effective When Tracking Irregularly Moving Subjects and Assists When Panning**.
• Minimum Focusing Distance Shortened from 3.9 ft. to Approx. 3.3 ft. (1.2m to 1m).

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