Went to Northern Norway recently, rented the Tamron 35-150 and a backup APS-C body (which I didn't need fortunately). The lens was nice but just can't see myself using it on the regular. But what happened was the majority of my pics were of the Northern Lights, and I found myself needing something wider than 16/17mm! Still kicking myself for not renting the 12-24/2.8 instead of the 35-150. (side note, I also thought I would need a telephoto for Orcas but since I got a RIB tour, the 35-150 was perfect for it) Ever have that happen?