The NEX-3 mirrorless interchangeable lens camera is the smaller sister model of the NEX-5. Both NEX cameras come with a 14.6 megapixel Exmor APS HD CMOS and the mirrorless E-mount. They offer a high-resolution tilting screen, fast continuous shooting and HD video capture. The NEX-3 has a slightly larger plastic body (vs magnesium on the NEX-5), doesn't come with an infrared remote receiver and only offers 720p HD video versus the NEX-5's 1080i AVCHD movie recording.