Upload & Sell: Off
Well, CZJ is reasonably small, light, sharp and has pretty good bokeh (actually very good). Btw. build quality of red series is pretty good too.
I know CZJ isnt "true Zeiss" but some of their lens are closer to that than anything else. Anyway, current "Zeiss" is actually Cosina.
I dont know if I would take it over C/Y. Zeiss made better portrait lens for C/Y anyway. C/Y 100/2 is one of best for example. While that 135/2.8 isnt bad, its not exactly groundbreaking either.
I think reason for buying that is either C/Y signature look or need for reasonably cheap 2.8. Otherwise I would get 80-200 or 35-135. Or if money wasnt issue, C/Y has 135/2 .. tho I have no idea how good that lens is, only that its really expensive.