Extends from wide 28mm to 105mm telephoto, all with a fast constant 2.8 maximum aperture. The use of four large diameter aspherical elements and three

Extends from wide 28mm to 105mm telephoto, all with a fast constant 2.8 maximum aperture. The use of four large diameter aspherical elements and three LD glass elements reduces various aberrations while minimizing fall-off of light at the corners. Tamron's Integrated-Focusing Cam system, Internal Focusing system and Triple-Cam zoom system all combine to permit a body that at the 28mm zoom position is very compact, with excellent optical performance. Also, an Anti-Slip-Mode mechanism prevents the lens barrel from sliding outward under its own weight.

Aperture range: f/2.8-22

Min focus: 19.7in.(0.5m)/28-105mm, 17.3in(.044m)/70-85mm

Available for Canon, Minolta, Nikon