The A7 is the world's first full-frame mirrorless camera. Why should you care? Simply put, that means its 24-megapixel sensor is the same size as 35mm film, but the sleek body is just 14.7 oz and just under two inches thick. Most full-frame DSLRs have at least twice the heft and volume, and the A7 combines the two most coveted qualities in photography – studio-quality images and run-and-gun portability. Translation? Better pictures wherever you roam. [$1,700; sony.com]