This is a good to very good lens overall.Not a typical Zeiss with a bit less than average 3D effect and a tad too much CAs,but sharp,vivid colour rendition,compact and small.Does well with FF and APS-C Canons as well as all NEXes that I got/\'ve had.
EOS 550D+200/4 C/Y Tele-Tessar
Consider also 80-200/4 Vario Sonnar.It is slightly bigger and heavier,but has less CAs at 200mm as well as comparable IQ
