iPhone X
4-6mm f/1.8-2.4
ISO 20
F1.8 1/590 second
My driveway was so icy that when I set the parking brake let let off the normal brake, the back tires alone wasn't enough to hold the car to the sloped driveway and I slid back into the street. So I shoveled and salted the top and backed in. That did the trick.