Comparison of Olympus 50-200mm f/2.8-3.5 ED SWD Zuiko Digital and Pentax 200mm f/2.8 ED IF SDM SMC DA*

Attribute	Olympus 50-200mm f/2.8-3.5 ED SWD Zuiko Digital ×	Pentax 200mm f/2.8 ED IF SDM SMC DA* ×
Notes	Dust and drip proof. Includes Lens Hood (LH-70C) and Lens Case (LSC-1220)	Included Accessories: PH-RBK Hood
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Magnification Ratio (x)	0.21	0.2
Filter Size (mm)	67	77
APS Equivalent	-	300mm
Closest Focus (m)	1.2	1.2
Focal Length (mm)	50.00 - 200.00	200.00
Zoom System	Rotary	-
Brand	Olympus	Pentax
Image Circle	Image Circle	APS-C
Name	Olympus 50-200mm f/2.8-3.5 ED SWD Zuiko Digital	Pentax 200mm f/2.8 ED IF SDM SMC DA*
Weight (g)	995	825
Type	Telephoto Zoom	Telephoto Prime
Diaphragm Blades Type	circular	-
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	6.20 - 24.00	8.10
Lens Construction	16 elements in 15 groups, including 3 ED elements	9 elements in 8 groups
Diameter (mm)	86.5	83
Length (mm)	157	134
Focus Details	-	Internal, SDM (Supersonic Motor) with Quick-shift Focus System
35mm Equivalent	100 - 400mm	-