Sigma 18-50mm f/2.8 EX DC Macro

Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 18-50mm ƒ/2.8 EX DC Macro
Image Circle APS-C
Type Standard Zoom
Focal Length 18 - 50mm
APS Equivalent 1.5x: 27 - 75mm; 1.6x: 28.8 - 80mm
Max Aperture ƒ/2.8
Min Aperture ƒ/22
Diaphragm Blades 7
Lens Construction 15 elements in 13 groups, including aspherical and Special Low Dispersion (SLD) elementss
Diagonal Angle of View(Based on image circle) 69.3 to 27.9 degrees
Focus Details Internal focusing system
Front Element Rotation No
Zoom System Rotary, non-telescoping
Closest Focus 20cm / 7.9 in.
Magnification Ratio 0.33x / 1:3
Filter Size 72mm
Dimensions(Length x Diameter) 85.8mm x 79mm / 3.4 in. x 3.1 in.
Weight 450g / 16 oz
Notes Available AF Mounts: Sigma, Canon, Nikon, Sony, Pentax, Four-Thirds
Typical Online Price US$420