Sigma AF 18-50mm F2.8 EX DC Aspherical Macro Specifications
   
  Product ID: 
#581
  Compatibility: 
APS-C only
  Diagonal Angle of View: 
69.3° - 27.9°
  Maximum Magnification: 
1:3
  Minimum Aperture: 
F22
  Number of Aperture Blades: 
7
  Iris Pattern: 
 
  Minimum Distance: 
20cm
  Filter Thread: 
72mm
  Maximum Diameter: 
79mm
  Length: 
85.8mm
  Weight: 
450g
  Focus Type: 
internal focus mechanism
  Full Focus Throw: 
60°
  Zoom Type: 
rotary
  Lens Hood: 
LH 780-04 (bayonet mounted, flower shaped)
  Produced: 
2006
  Tests: 
  PopPhoto Measurements: 
18.80-50.55mm F2.99-3.03 at 1:4.96-1:2.59