This product from OM SYSTEM delivers 20.4-megapixel pictures and has a separate lens. If you want to shoot video with this camera, you can do so with 4096x2160 resolution.
From Photospecialist
OM System OM-5 silver + 14-150 mm F/4.0-5.6 ED II
OnBuy
OM System OM-5 Mirrorless Camera with 14-150mm F/4-5.6 II Lens (Silver)