The focal lengths of these three lenses are different. Simply put, 16-35 is a wide-angle lens, which means you can stand in front of you and shoot a long-distance effect. This kind of lens works best in a narrow space, such as a small room. Not only that, this lens can shoot a grand feeling when shooting scenery; 24-70 is the standard lens. This focal length is our most commonly used focal length, and about 50mm is also the focal length that is most in line with the human perspective. Therefore, when you hang up, as for what to shoot, you can only say that you can shoot anything. Indoor and outdoor, wedding dresses and conference photos can be taken. Many people use this lens; And 70-200 is a telephoto lens, which means you can take a distant scene very close, but of course you can't take it too far. It's no problem to take a party. You can see many people taking wedding photos with this lens. If you shoot birds, this shot should be ok, but compared with those genuine "long guns", it is estimated to be amateur. If you still don't understand, please continue to ask questions and welcome to discuss with me.

24-70F/2.8 is better than 24- 105F/4, because the aperture is much larger, so 24-70F/2.8 performs better in low light.