Sigma AF 28-70mm F3.5-4.5 UC Specifications
   
  Product ID: 
#620
  Compatibility: 
2001 issue (Err 99 - not compatible with Canon EOS bodies released since 2001)
  Diagonal Angle of View: 
75.4° - 34.3
  Maximum Magnification: 
1:6.5
  Minimum Aperture: 
F22 - F27
  Number of Aperture Blades: 
 
  Iris Pattern: 
 
  Minimum Distance: 
50cm
  Filter Thread: 
52mm
  Maximum Diameter: 
69.5mm
  Length: 
62.5mm
  Weight: 
330g
  Focus Type: 
 
  Zoom Type: 
rotary
  Lens Hood: 
bayonet mounted
  Produced: 
1990 - 1995
  Tests: 
   
  Additional Information: 
The lens was also sold as 
Exakta and Promaster rebadge, and probably by Quantaray as well.