Comparison of Pentax SMC P-FA J 28-80mm f/3.5-5.6 AL and Pentax SMC P-FA 28-90mm f/3.5-5.6

Attribute	Pentax SMC P-FA 28-90mm f/3.5-5.6 ×	Pentax SMC P-FA J 28-80mm f/3.5-5.6 AL ×
Type	Standard Zoom	Standard Zoom
Name	Pentax SMC P-FA 28-90mm f/3.5-5.6	Pentax SMC P-FA J 28-80mm f/3.5-5.6 AL
Weight (g)	196	179
Image Circle	35mm	35mm
Brand	Pentax	Pentax
APS Equivalent	42 - 135mm	42 - 120mm
Focal Length (mm)	28.00 - 90.00	28.00 - 80.00
Closest Focus (m)	0.4	0.4
Lens Construction	8 elements in 10 groups	8 elements in 8 groups
Filter Size (mm)	58	58
Magnification Ratio (x)	0.28	0.25
Aperture (f)	3.50 - 38.00	3.50 - 38.00
Diagonal Angle of View (degree)	27.00 - 75.00	30.50 - 75.00
Zoom System	Rotary	Rotary
Diameter (mm)	66	64
Length (mm)	69	66