The A7C R is one of the smallest full-frame, interchangeable-lens cameras on the market. This is why it's our top pick for travelers in our guide to the Best Mirrorless Cameras. The super fast autofocus system is among the best you'll find in mirrorless camera, and there's great subject tracking as well, making it perfect for shooting fast-moving scenes on the go. My main gripe about the A7C R is the same as it was in my initial review. ★ Alternative: At $2,198, Sony's A7C II (note, no R) is a bit cheaper.