I have a new hobby: mountaineering. It's awesome. With some awesome guides from SMI, a couple buddies, a father-in-law, and some unknowns teamed up to tackle a nice primer route on Mount Whitney. I just had the A7r2 with me and the small Sony 16mm F2.8 - a light enough package to not weigh me down but capable enough to get some cool shots.
Check it out: