The more i read comments the more i see ignorant people about technique!! Sorry for my english!
(unknown member): "The XF 18-55mm F2.8-4 R OIS LM offers a fairly-standard 28-80mm equivalent zoom range, but with an unusually fast maximum aperture."
Really? Unusual? Are DPR not aware that Canon, Nikon, Tamron, Tokina, and Sigma ALL have this zoom with at CONSTANT f/2.8 aperture?
Not unusual!! Nikon Canon ecc... with 2.8 aperture are huge, heavy and made for reflex cameras!!! Don't you know!! !8-55 for small sensor so small does not exist with 2.8. aperture! Dpreview is right!!