Sigma 18-200mm F3.5-6.3 DC Lens Review at CameraLabs
CameraLabs have just reviewed the new Sigma 18-200mm F3.5-6.3 DC lens.
“In terms of focusing speed, the Nikkor’s premium SWM system was certainly quicker than the Sigma and Tamron, but not by a large degree. Where they really differed though was in focusing noise with both the Sigma and Tamron models being considerably louder than the Nikkor. The Tamron was worst of all in this respect, grinding quite conspicuously during manually focusing. Again if ultimate discretion is your thing, you’ll need to spend more on the Nikkor.”
Website: CameraLabs - Sigma 18-200mm F3.5-6.3 DC Lens Review