I’ve bought a Canon EW-63C lens hood for my lens but I find that it has only 2 bayonet fittings compared to the three on my lenses. When screwed on, it does not feel secure so have I bought the wrong lens hood?
I’m sure it is genuine Canon as it came from a reputable online dealer. It was bought for the standard kit lens 18-55mm f3.5-5.6
That is the correct lens hood for that lens. I have that combination. Mine also does not attach tightly so you are not alone. The other problem that I have is that the front element rotates during focusing so the tulip lens hood can cause vignetting if it rotates to the wrong position. I am considering buying an after market round lens hood.
This is one of those, gosh darn moments, if it does not feel secure, you can get away with it by using a bit of electrical tape to secure it in place.
This is the right hood, Canon uses two grooves on the hoods and ends of lenses that turn and clip in place.
you can use a rubber band to tighten the grip of the loose lens hood by cutting the band so its a strip then laying it across the bayonet rather than around it and cutting off the access