Comparison of Nikon Z 50-250mm f/4.5-6.3 VR DX Nikkor and 70-300mm F/4.5-6.3 Di III RXD (Model A047)

Attribute	70-300mm F/4.5-6.3 Di III RXD (Model A047) ×	Nikon Z 50-250mm f/4.5-6.3 VR DX Nikkor ×
Aperture (f)	4.50 - 32.00	4.50 - 16.00
Filter Size (mm)	67	62
Notes	Available mounts: Sony E-mount; Moisture-Resistant Construction.	VR Image Stabilization (up to 5.0 stops); Petal-shaped lens hood included.
Closest Focus (m)	0.8	0.5
Magnification Ratio (x)	0.11	0.23
Zoom System	Rotary	Rotary
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	1.5x: 105 - 450mm	75 - 375mm
Diaphragm Blades	7	7
Image Circle	35mm (Full-frame E-Mount)	APS-C (Z-Mount)
Focal Length (mm)	70.00 - 300.00	50.00 - 250.00
Brand	Tamron	Nikon
Name	70-300mm F/4.5-6.3 Di III RXD (Model A047)	Nikon Z 50-250mm f/4.5-6.3 VR DX Nikkor
Weight (g)	544.3	405
Diaphragm Blades Type	circular	rounded
Lens Construction	15 elements in 10 groups, including LD (Low Dispersion) lens element; BBAR (Broad-Band Anti-Reflection) Coating	16 elements in 12 groups, including 1 ED glass element
Diagonal Angle of View (degree)	8.25 - 34.35	6.50 - 31.50
Length (mm)	147.3	110
Diameter (mm)	77	74
Focus Details	Internal using RXD (Rapid eXtra-silent stepping Drive) autofocus motor	Autofocus with STM (Stepper Motor), manual focus