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Sigma 18-50mm f/2.8 EX DC Macro lens test
- 05-05-2007
- Categorized in: Lenses
With Sigma's new 18-50mm f/2.8 macro ($420, estimated street), we jog past another milestone: This was the industry's first digital-only lens to be released in a secondgeneration version. The closest focusing of any Sigma zoom, this 30-85mm (equivalent, with our test camera's 1.6X lens factor) features a wider barrel and larger filter size, and much closer focusing (from 7.25 inches, rather than 11.25 inches) than the 18-50mm it replaces, at about the same price.
Attractively finished in Sigma's matte-black "Pro" surfacing, the lens offers ribbed and rubberized zoom and manual-focus rings, and is well-marked with easily legible focusing, zoom, and macro scales. Internal focusing with a non-rotating front element, the lens can't be focused manually in AF mode. In MF mode, the action is smooth, but slightly underdamped, while zooming is both well-damped and even. Autofocusing on our test camera (Canon EOS Digital Rebel XTi) was rapid, quiet, and sure. Read the whole test here
Attractively finished in Sigma's matte-black "Pro" surfacing, the lens offers ribbed and rubberized zoom and manual-focus rings, and is well-marked with easily legible focusing, zoom, and macro scales. Internal focusing with a non-rotating front element, the lens can't be focused manually in AF mode. In MF mode, the action is smooth, but slightly underdamped, while zooming is both well-damped and even. Autofocusing on our test camera (Canon EOS Digital Rebel XTi) was rapid, quiet, and sure. Read the whole test here