Pierwsze z brzegu:

http://canon-board.info/showthread.p...t=Tamron+28-75
http://canon-board.info/showthread.p...t=Tamron+28-75
http://canon-board.info/showthread.p...t=Tamron+28-75
http://canon-board.info/showthread.p...t=Tamron+28-75
http://canon-board.info/showthread.p...t=Tamron+28-75
http://canon-board.info/showthread.p...t=Tamron+28-75

Te i wiele, wiele innych... wystarczy trochę poszukać.