Comparison of Konica Minolta AF 20-35mm f/3.5-4.5 and Vivitar 19-35mm f/3.5-4.5 Series 1 AF

Attribute	Konica Minolta AF 20-35mm f/3.5-4.5 ×	Vivitar 19-35mm f/3.5-4.5 Series 1 AF ×
Name	Konica Minolta AF 20-35mm f/3.5-4.5	Vivitar 19-35mm f/3.5-4.5 Series 1 AF
Weight (g)	325	300
Image Circle	35mm	35mm
Brand	Konica-minolta	Vivitar
APS Equivalent	30 - 52.5mm	1.5x: 28.5 - 52.5mm; 1.6x: 30.4 - 56mm
Focal Length (mm)	20.00 - 35.00	19.00 - 35.00
Closest Focus (m)	0.5	0.5
Diameter (mm)	77.5	82
Filter Size (mm)	72	77
Magnification Ratio (x)	0.08	0.08
Aperture (f)	3.50 - 27.00	3.50 - 27.00
Diagonal Angle of View (degree)	63.00 - 94.00	63.00 - 97.00
Zoom System	Rotary	Rotary
Type	Wide Zoom	Wide Zoom
Lens Construction	13 elements in 11 groups	13 elements in 11 groups
Notes	-	Available AF mounts: Canon, Minolta, Nikon, Pentax
Length (mm)	69.5	69