Redmi series is a mid-range series and the latest edition in Redmi line up are Redmi and Redmi 5 Plus.
The Redmi series is not a great series in terms of camera but the company has put an acceptable camera in Redmi 5 Plus.
In the rear, Redmi 5 Plus sports a single camera with a resolution of 12 MP with f/2.2 aperture and 1.25μm sensor. It features phase detection autofocus, dual-LED dual-tone flash.
Here are the camera samples of Xiaomi Redmi 5 Plus:
The camera also supports Geo-tagging, touch focus, face/smile detection, HDR, panorama. It can record video at a max resolution of 1080p at 30 fps.
The device sports 5 MP resolutions capable of recording videos in 1080p too.
The camera specs seem competitive in this price range. The device can take decent photos in good light but loss details in low light condition.