I use it in the studio, it gives good sharpness from about 40mm, there are a couple of examples on my website p=265 then it would be 17-40 4.0 of the L series, for 30 thousand). Has some pros: Unlike 18-55, there is already GLASS, because this is a zoom lens, it can be both wide-angle and telephoto. Cons below: Overpriced for China, a bit dark, Not sharp at short focal lengths.
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review
Canon EOS SLR Camera Lens EF 24-105mm f/4 L IS USM
124 Review
New Nikon 18-105mm Vibration Reduction 📷 Zoom Lens with Auto Focus for Nikon DSLRs
104 Review
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review