Comparison of Olympus 12-100mm ƒ/4 IS Pro M.Zuiko Digital ED and Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070)

Attribute	Olympus 12-100mm ƒ/4 IS Pro M.Zuiko Digital ED ×	Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070) ×
Diagonal Angle of View (degree)	12.30 - 84.10	23.00 - 79.90
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Diaphragm Blades Type	circular	circular
Filter Size (mm)	72	67
Notes	VCM image stabilization up to 5 stops at 100mm (6.5 stops with E-M1 II's 5-axis Sync IS); Splash and dust proof	Available mounts: Sony E-mount; Moisture-resisteant construction
35mm Equivalent	24 - 200mm	25.5-105mm
Type	Standard Zoom	Wide Zoom
Diaphragm Blades	7	9
Lens Construction	17 elements in 11 groups, including 1 DSA, 3 aspherical, 5 ED, 1 HR and 2 Super HR elements); Z Coating Nano	16 elements in 12 groups, including 2 LD (Low Dispersion) and 3 aspherical elements (2 molded glass aspherical elements, one hybrid aspherical elemen
Image Circle	Image Circle	Image Circle
Focal Length (mm)	12.00 - 100.00	17.00 - 70.00
Brand	Olympus	Tamron
Name	Olympus 12-100mm ƒ/4 IS Pro M.Zuiko Digital ED	Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070)
Weight (g)	561	525
Zoom System	Rotary	Rotary
Closest Focus (m)	0.15	0.19
Diameter (mm)	77.5	74.6
Length (mm)	116.5	119.3
Focus Details	-	Internal via RXD (Rapid eXtra-silent stepping Drive) with DMF (Direct Manual Focus)
Magnification Ratio (x)	0.3	0.21