Sunshade handle with care

I opted for the purchase of this lens hood given the exorbitant price of the Canon product that considers the plastic like a precious material. This lens hood is a little hard to set up, I confess that i hesitant to force the development system. The solution i found is to put the visor on the goal before it is followed suit on the case, after putting the focus manually shortest and firmly hold the ring. I therefore never mounts the rest position. This is probably the price to pay for precisely not overpaying .. JESPERE Quà lusage the establishment should sassouplir.