the optical layout of this lens incorporates a Blue Spectrum Refractive Optics element
Nano-GI (Gradient Index) coating has been applied to lens elements and alters the refractive index between the glass and air in order to better suppress lens flare and ghosting for diagonal incident light
Complementing the optics is a stepping motor
Two batteries are better than one
The versatile focal length suits shooting everything from street to landscapes
Tamron 70-300mm f/4.5-6.3 Di III RXD Lens Mount:for Sony E the optical layout of thisThe Tamron 70 300mm f 4. 5 6. 3 Di III RXD is a compact, lightweight telephoto zoom lens that offers an ideal balance of reach, portability, and performance. Well suited for sports, wildlife, portraits, and everyday telephoto shooting, this versatile lens delivers a popular zoom range in a sleek form factor thats easy to carry and handle for extended sessions. Covering a flexible 70300mm focal length range, this lens is effective for isolating distant