Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD Lens for Sony E - Brand New review
I would never buy an 18-200 mm megazoom. I don’t even mean here their weak performance because the latest launches in that segment showed that you can find several good devices, fully able to provide images of decent quality.
very universal focal lengths range,, good image quality in the frame centre,, proper correction of the longitudinal chromatic aberration,, slight chromatic aberration in a range from 16 to 100 mm,, sensible correction of coma in 50–300 mm range,, moderate vignetting at the longer end of focal...
weak image quality at the maximum relative aperture and on the edge of the frame for all focal lengths, huge level of lateral chromatic aberration in the focal range from 200 to 300 mm,, high distortion at wide angles of view.