Tamron 18-270mm F3.5-6.3 VC PZD NIKON 18-270MM LENS review
The Tamron 18-270 mm VC joined the megazoom class and set a new record of the zoom ratio. Elbowing your way in this segment is not easy though, and the standards were set high by the Nikkor 18-200 mm VR and the Sigma 18-200 OS.
very universal focal lengths range,; efficient image stabilization,; good image quality in the frame centre in the range of 18-200 mm,; decent performance at the frame edge in the range of 18-200 mm,; moderate or low chromatic aberration in the range of 18-200 mm,; quite well corrected coma,; good...
slow and not very accurate autofocus,; weak action of zoom ring and manual focus ring,; weak performance at 270 mm,; distinct vignetting in all focal range,; high distortion.