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Sigma 120-400mm f/4.5-5.6 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras | 
| Brand: Sigma
Category: Photography
Buy New: See price in cart
New (6)
Rating:  1 reviews
Media: Electronics
Fragile: No
Batteries Included: No
Maximum Focal Length: 400
Minimum Focal Length: 120
Shipping Weight (lbs): 5.7
Dimensions (in): 19.7 x 19.7 x 19.7
MPN: 728-306
Model: 728-306
UPC: 085126728557
EAN: 0085126728557
ASIN: B001542X5K
Availability: Usually ships in 24 hours
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| Features:
| • | Three SLD glass elements and a rear focus system provide optimum image quality throughout the entire zoom range | | • | Minimum focusing distance of 150cm (59.1) makes it useful for close-up photography | | • | Dimensions - 19.7 x 19.7 x 19.7 | | • | Weight - 5.4 pounds |
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Product Description
The Sigma 120-400mm 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 a rear focus system that minimizes the 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 maximum magnification of 1:4.2 make it useful for close-up photography. This lens incorporates a Hyper Sonic Motor (HSM), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The addition of the optical 1.4x EXDG 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.
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| Customer Reviews:
Use a tripod. July 5, 2008
Dom Miglionico (La Luz, NM)
7 out of 7 found this review helpful
This is one big hunk o' lens (5 lbs) that benefits greatly from the use of a sturdy tripod and a remote shuter release. The photos I took were acceptably sharp on a tripod, but it takes a steady hand, even with the OS, to get similar results hand-held. I'm not yet convinced that the OS, especially at the 400mm setting, actually gives you a 3-4 shutter speed advantage. Maybe this will improve as my technique improves. I was also suprised to read in the isntruction sheet that you must wait approximately 1 second after pressing the shutter release half-way to get a stable image. Is this common to all image-stabilization lenses? I was also somewhat confused by the OS instructions which call for OS 1 for camera shake, and OS 2 for subject travel accross the horizontal plane. Since the instructions also warn against using OS while the camera is on a tripod, this seems inconsistent with the stated use of OS 2. The HSM autofocus is very quiet, but sometimes has difficulty locking in on the subject. This is probably not much different from similar lenses of this type (I've read identical complaints about the Nikon lens). However; the all-the-time manual focus over-ride comes in very handy in those cases where the auto focus system is having a hard time. Having had the lens for just a few days I think that, for the money, it will fill my occasional need for a long telephoto lens.
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