I'm planing to go on a trip where I plan to do some landscape photography. While I started out with 18-105mm lens, I noticed the quality can be poor around the edges in some cases and I know it's really not the best lens to do landscapes.
While I read this and this, I'm still not sure which lenses to use as wide-angle. So I'm looking for sharper quality as my current lens and wide. I've seen THIS review of 18-55mm VR which says the quality is good, but I'm not sure is this wide or isn't.
So which lenses should I be looking at for a beginner to mid range for my Nikon D5300 camera?