Can a lens of different focal-length improve photography?
Yes and No. That is the only true answer. A lens has to be adapted to your vision and subject. Even though some lenses are often associated with some types of photography (landscape, portraits, architecture, etc), photographers rarely limit themselves to one type of lens for a type of subject. Moving back and shooting with a longer lens is not equivalent as it changes the relationship between of things at different depths. In some locations you end up very close to the scenic vistas (beaches, nature trails) and there are interesting foreground details which deserve emphasis (flowers, seashells, moss, etc) in which case a wide-angle be easier to compose with. In other locations, the interesting things are far and without a long lens is becomes difficult to make an interesting shot. Regardless of what angle-of-view your lens is, you have to be able to fill the frame with interesting things. Just because something is harder with some lens does not mean you should not shoot with it. Unusua
