On occasion I have used a 165mm fast-focus tele on my Pentax 67, chiefly for 'bringing in' a little too distant waterfall or some other major element of the landscape or tors/rock outcrops, trees. Teles are not my first choice for landscape due to inherent perspective compression, but they are useful when a closer approach on foot is not possible or hazardous. A couple of occasions much earlier this year the 165mm was too much for the job; I have now added a 90mm which is a perfect step down with a more natural perspective.