Comparison of Olympus 150mm f/2 Zuiko Digital and Sigma 50-100mm f/1.8 DC HSM Art

Attribute	Olympus 150mm f/2 Zuiko Digital ×	Sigma 50-100mm f/1.8 DC HSM Art ×
Diagonal Angle of View (degree)	8.20	16.20 - 31.70
Notes	Includes Lens Hood (LH-89) and Lens Case (LSH-1220); Compatible with TC-14 Teleconverter and EX-25 Extension Tube	Available AF Mounts: Canon EF-S, Nikon F, Sigma SA; Included Accessories: Lens hood, lens caps, tripod collar. Compatible with Sigma USB Dock.
Aperture (f)	2.00 - 22.00	1.80 - 16.00
Type	Telephoto Prime	Telephoto Zoom
Filter Size (mm)	82	82
APS Equivalent	-	1.5x: 75 - 150mm; 1.6x: 80 - 160mm
Diaphragm Blades Type	-	rounded
Diaphragm Blades	9	9
Lens Construction	11 elements in 9 groups, including ED / Super ED elements	21 elements in 15 groups, including 3 FLD (F Low Dispersion) glass elements, 1 SLD (Special Low Dispersion) glass element, and 1 high-refractive inde
Image Circle	Image Circle	APS-C
Focal Length (mm)	150.00	50.00 - 100.00
Brand	Olympus	Sigma
Name	Olympus 150mm f/2 Zuiko Digital	Sigma 50-100mm f/1.8 DC HSM Art
Weight (g)	1600	1491
Diameter (mm)	100	94
Front Element Rotation	-	-
35mm Equivalent	300mm	-
Length (mm)	150	170.2
Focus Details	-	HSM (Hyper Sonic Motor) with full-time manual focus override
Magnification Ratio (x)	0.13	0.15
Zoom System	-	Rotary
Closest Focus (m)	1.4	0.95