Comparison of Panasonic 14-50mm f/2.8-3.5 ASPH Leica D VARIO-ELMARIT and Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070)

Attribute	Panasonic 14-50mm f/2.8-3.5 ASPH Leica D VARIO-ELMARIT ×	Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070) ×
Diagonal Angle of View (degree)	24.00 - 75.00	23.00 - 79.90
Notes	Additional features: Mega O.I.S. Image Stabilization; Aperture ring	Available mounts: Sony E-mount; Moisture-resisteant construction
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Magnification Ratio (x)	0.32	0.21
Filter Size (mm)	72	67
35mm Equivalent	28 - 100mm	25.5-105mm
Type	Standard Zoom	Wide Zoom
Diaphragm Blades	7	9
Lens Construction	16 elements in 12 groups, including 2 aspherical elements	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	Four-Thirds	Image Circle
Focal Length (mm)	14.00 - 50.00	17.00 - 70.00
Brand	Panasonic	Tamron
Name	Panasonic 14-50mm f/2.8-3.5 ASPH Leica D VARIO-ELMARIT	Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070)
Weight (g)	490	525
Zoom System	Rotary	Rotary
Focus Details	Internal	Internal via RXD (Rapid eXtra-silent stepping Drive) with DMF (Direct Manual Focus)
Diameter (mm)	78.1	74.6
Length (mm)	102.8	119.3
Diaphragm Blades Type	-	circular
Closest Focus (m)	0.29	0.19