Comparison of Olympus 40-150mm f/3.5-4.5 Zuiko Digital and Pentax SMC P-FA 100mm f/3.5 Macro

Attribute	Olympus 40-150mm f/3.5-4.5 Zuiko Digital ×	Pentax SMC P-FA 100mm f/3.5 Macro ×
Notes	Includes Lens Hood (LH-61B); Compatible with TC-14 Teleconverter and EX-25 Extension Tube	-
Magnification Ratio (x)	0.12	0.5
Filter Size (mm)	58	49
Length (mm)	107	71
Closest Focus (m)	1.5	0.43
Zoom System	Rotary	-
Diameter (mm)	77	67.5
Image Circle	Image Circle	35mm
Focal Length (mm)	40.00 - 150.00	100.00
Name	Olympus 40-150mm f/3.5-4.5 Zuiko Digital	Pentax SMC P-FA 100mm f/3.5 Macro
Brand	Olympus	Pentax
Weight (g)	425	221
Type	Telephoto Zoom	Telephoto Prime
Front Element Rotation	-	-
Aperture (f)	3.50 - 22.00	3.50 - 22.00
Diaphragm Blades	7	-
Diagonal Angle of View (degree)	8.20 - 30.00	24.50
Lens Construction	13 elements in 10 groups	5 elements in 4 groups
APS Equivalent	-	150mm
35mm Equivalent	80 - 300mm	-