This is a paid asset, but now you can download NatCam – WebCam API Free.
Detail this asset from Unity Store: Original Link
NatCam – WebCam API v2.3.1 (Latest version)
NatCam is a native camera API for iOS and Android that gives you full control over the cameras on a device. NatCam is highly optimized for speed while maintaining a low memory footprint. Features include:
– Blazing fast camera preview on Android and iOS.
– HD . You can view what your phone sees in HD, or even higher resolutions if you wish to. All at a solid framerate.
– Custom resolutions . NatCam allows you to set the camera’s resolution. There are also resolution presets for ease of use.
– Photo capture . NatCam allows you to capture high-resolution insta-worthy photos. You also have control over lighting with flash mode access.
– Focus . Focus on anything you see. It also features focus modes including autofocus, tap to focus, or even off.
– Exposure . Set custom exposure bias for properly exposing those under- and over-exposed scenes your app will face. It also features exposure modes including auto exposure and locked exposure.
– Zoom . NatCam supports hardware optical zoom.