Thewill cost about $899 when it starts shipping in November for Canon SLR cameras, the Japanese lensmaker said Friday.
The all-around zoom lens will ship for Nikon and Sigma cameras in December, with Sony support "soon" afterward, Sigma said at the PhotoPlus Expo in New York.
The 24-105mm is aimed squarely at Canon's EF 24-105mm f/4L IS USM, which often ships as the kit lens with high-end full-frame SLRs like the EOS 5D Mark III and which has a standalone price of about $800.
Sigma, which hit a home run with its 35mm f1.4 DG HSM that arrived earlier this year, is clearly hoping for more successes with its new "art" line of higher-end lenses. In its announcement, Sigma boasts of the 24-105mm use of very low-dispersion glass aspheric lens elements to cut down on chromatic aberration, distortion, and other optical problems.
"Unlike lenses with similar specifications, this lens overcomes low peripheral brightness," Sigma added, though refraining from mentioning Canon specifically. According to DxO Labs' measurements, the Canon 24-105mm lens loses more than a full stop of exposure in the corners of the frame on average, and more than 2 stops at the 24mm end of the zoom range.
Sigma's lens also includes optical stabilization, weighs 885g (31.2oz), has a close-focus distance of 45cm (about 18 inches), a maximum magnification ratio of 1:4.6, and 9 curved aperture blades.
Unlike Canon's 24-105mm lens, though, Sigma's doesn't have any sealing against water or dust.