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Sigma APO 120-400mm F/4.5-5.6 DG OS HSM
Reviews Views Date of last review
1 13516 Tue September 23, 2008
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Recommended By Average Price Average Rating
100% of reviewers None indicated 9.0
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Description: Telephoto zoom lens incorporates Sigma’s original OS (Optical Stabilizer) function

• Three SLD glass elements and a rear focus system provide optimum image quality throughout the entire zoom range.
• Super multi-layer coating reduces flare and ghosting.
• The minimum focusing distance of 150cm (59.1”) makes it useful for close-up photography.
• HSM ensures quiet and high-speed autofocus.
• Compatible with Sigma’s APO Tele Converters.

This telephoto zoom lens incorporates Sigma’s original OS (Optical Stabilizer) function. It offers the use of shutter speeds approximately 4 stops slower. Three SLD (Special Low Dispersion) glass elements provide excellent correction for chromatic aberration.

This lens is equipped with the rear focus system that minimizes fluctuation of aberration caused by focusing. It provides optimum image quality throughout the entire zoom range. The super multi-layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. The minimum focusing distance of 150cm (59.1”) throughout the entire zoom range and has a maximum magnification of 1:4.2 make it useful for close-up photography.

This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The addition of the optical 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 168-560mm F6.3-8 MF ultra-telephoto zoom lens or a 240-800mm F9-11 MF ultra-telephoto zoom lens respectively.

Lens Construction

• 21 Elements in 15 Groups
• Angle of View 20.4 - 6.2 degrees
• Number of Diaphragm Blades 9 Blades
• Minimum Aperture F22
• Minimum Focusing Distance 150cm / 59.1 in.
• Maximum Magnification 1:4.2
• Filter Size Diameter 77mm (Rear)
• Filter Size Bayonet-type Hood
• Dimensions Diameter 92.5mm X Length 203.5mm 3.6 in. X 8 in.
• Weight 1750g/61.7 oz.
• Corresponding AF Mounts SIGMA, CANON, NIKON, PENTAX, SONY

The appearance, specifications, and the like of the product are subject to change for improvement without notice.
The angle of view depends upon the digital camera being used.
Keywords: Sigma 120-400mm zoom


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franzoi.eu
New here

Registered: September 2008
Location: ITALIA
Posts: 1
Review Date: Tue September 23, 2008 Would you recommend the product? Yes | Price you paid?: None indicated | Rating: 9 

 
Pros: OS 4 stop, HSM, ring tripod, price for 400mm
Cons: weight,

good OS 4 stop, but less than IS canon, much slower and noisy to stabilize the image.
Very sharp 400mm f/8 and f/11


With 450d = 192mm - 640mm
With Sigma Teleconverter x1,4 or x2,0 AF does not work.
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