I can't help wondering if you might not want to consider something longer than your 24mm rather than shorter?
'Landscape Photography' is a bit of a catch-all term and like most things in life sometimes the answer is "it depends" on exactly what one means by that.
I used to think landscape photography was all about getting the widest angles possible and photographing huge open spaces, but increasingly I'm finding my 'landscape' compositions are much improved with tighter framing, like 35-100mm.
I love my 35mm prime but oftentimes the longer end of the cheap and cheerful 18-135 gets the money shot; the former being obviously better for IQ for static compositions (e.g. buildings etc), whereas the latter is unbeatable for walkaround hiking when you suddenly see an unusual shaft of light coming through the trees in the mid-distance or whatever.
Just my $0.02!
I do have a 100mm that I use often. When my buddy and I go out, he has a zoom that is 24mm at the shortest. He can sometimes get a better composure that I can't with 35mm even if I zoomed with my feet.
I think I want wider, for, now....a 70-200 is on the list as well.


