UK based Sigma Corp. released the APO 120-400mm F4.5-5.6 DG HSM lens which is now available for Sony and Pentax digital SLRs.
According to Sigma its new “OS (Optical Stabilizer) system allows use of a shutter speeds approximately 4 stops slower than would otherwise be possible. The effect of lens based stabilization is visible through the viewfinder so allows the photographer to easily check for accurate focus and ensure there is no subject movement”.
The minimum focusing of the Sigma lens is 150cm 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 focus override.
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.
*Incorporates Sigma’s original OS (Optical Stabilizer) system
*Special Low Dispersion glass elements
*Inner focusing system
*HSM (Hyper Sonic Motor) motor and full time manual focus
*Minimum focusing distance of 150cm at all focal lengths
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