No no. En el actual también.
Todos viñetean, hablo en FX, lo importante es saber que diferencia de EV hay entre el centro y los bordes.
http://www.lenstip.com/375.8-Lens_review-Tamron_SP_70-200_mm_f_2.8_Di_VC_USD_Vignetting.HTML
http://photo.net/equipment/tamron/70-200vc
Copio y pego:
Bob Atkins
The Tamron 70-200/2.8 VC USD shows some vignetting at wider apertures when shooting full frame. Measuring at about 90% of the distance from the center to the corner of the (full) frame with focus around infinity, both at 200mm and 70mm I estimated approximately 1.3 stops at f2.8, 2/3 stop at f4, 1/2 stop at f5.6 and less than 1/3 stop at f8. The image on the right shows the vignetting wide open at 70mm. On most “normal” images this represents fairly mild vignetting, but if you are shooting uniform tone subjects (e.g. the sky) you may notice some corner darkening, especially if shooting wide open at f2.8. For comparison, the Canon EF 70-200/2.8L IS USM shows pretty similar numbers.
The degree of vignetting was pretty equal at all four corners of the frame throughout the focal length range, as it should be for a well aligned lens.
Looking at an APS-C frame, vignetting in the corners was considerably less evident, with less than 1 stop at 200mm and less than 1/2 stop at 70mm wide open, dropping to under 1/3 of a stop by f4.
un saludo,
Ivan