Before that, I ran with Tamron 17-28, which is stupidly better in this range of focal lengths. It is smaller, more comfortable, lighter, much cheaper, has less backlight and glare problems. At least not inferior in sharpness. Although with somewhat worse bokeh. On it, unlike the 16-35 GM, you can take a photo almost point-blank to the cat's nose to get an interesting look. But GM has much wider focal lengths. There is a huge difference between 28 and 35. If desired, you can even shoot an adequate medium-sized portrait, which simply cannot be done with ultra-wide lenses of competitors with aperture of 2.8. This lens also has significantly softer bokeh where you won't see onion rings. At first it seemed to me that overlapping focal lengths with other lenses was a waste of money, but in combat this is not at all the case. Poke equipment back and forth - that's another disaster. For the sake of versatility and softer bokeh, you can overpay for GM. Shooting in museums or outdoors, where you want to see more of the background behind people or capture more space is completely covered by this lens with excellent image quality.
Canon EOS SLR Camera Lens EF 24-105mm f/4 L IS USM
124 Review
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review
Nikon 35mm f/1.8G Auto Focus Lens for Nikon DSLR Cameras - Black (Model 2183)
125 Review
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review