'IS' Unit of my Canon 600mm was not working, gave it to Canon Hong Kong for repair, at the time of depositing my lens for repair; Canon Tsim Sha Tsui offered me a free delivery service after repair and i was very happy. After repair of lens Courier company was not bringing my lens and after two days when the delivery company bring in the lens at my home today at 8 pm and the moment i saw the packing, i got suspicious that 600mm can not fit into such a tiny box, this person was in a hurry but i told him that i need to check the lens first then i will sign the receipt. After opening the tiny box,after taking out lens ....what i saw unbelievable looks like Canon gave me lens to some blacksmith .... i can not say at this moment who is responsible for it ...Canon or Courier Company but in the end Canon would be held responsible, i have already sent an email to Canon Hong Kong, will wait until they open tomorrow and then will let you know. Word of cation, watch out .... photo is attached