WebJun 22, 2019 · If I'm using the 24-105mm lens on a crop sensor camera, it's equivalent to 38.4mm-168mm. The 17-55mm lens is equivalent to 27.2mm-88mm. I'm thinking of using the 24-105mm lens with the EW-83J lens hood intended for another lens, because the 24mm lens hood (EW-83H) needs to be relatively small due to the wide angle, and โฆ