Great shots of a fascinating landscape! It seems you've used the 18-55 zoom .. or 18-135 .. for these shots - it's pretty good.
Thank you Lars.
I take the 18-135 hiking, for several reasons:
1) weather resistance. Important in the mountains in the UK, part of the hike can often be in rain/snow conditions. I want the camera always out ready to shoot.
2) minimize lens changes. Same reasons as above, plus speed constraints, as I normally hike with non-photographers and "steal" shots as we go
3) IQ penalty is not that great because I tend to operate at fairly closed down apertures. For the type of photography I do in those conditions shallow DOF is not that important