Tamron SP 90mm f/2.8 Di Macro 1:1 VC USD Nikon mount lens review: can this updated lens outperform its legendary predecessor?By Kevin Carter - Tuesday July 23 2013 Lens Review
Tamron SP 90mm F/2.8 Di MACRO 1:1 VC USD Nikon Versus Tamron SP AF 90mm F/2.8 Di MACRO Nikon both mounted on Nikon D800:Any improvement in image quality?
Compared with the older model the new lens shows a significant increase in sharpness (up +5P-Mpix from 14P-Mpix) and that’s noticeable right into the corners from full-aperture through to f/8 where the two lenses show similar sharpness levels across the field.
Although chromatic aberration was relatively low in the original model the new lens sees even lower levels. Distortion is negligible at 0.1% but there has been a slight increase in vignetting at maximum aperture.