This particular lens comes with auto focus for best possible result. If you want your pictures to come out really sharp, then you might want to use this lens and its image stabiliser.
From London Camera Exchange
Canon RF 15-30mm F4.5-6.3 IS STM
Camera Centre
Canon Lens Hood EW-73E for RF 15-30mm f4.5-6.3 IS STM
This product is also available at 12 unverified stores.