This is a high resolution camera sensor to which you can fix a camera lens. I built a camera using a pi with an Adafruit screen in a Pimoroni case. I attached the sensor to the back of the case and added a shutter button using the software from the current MagPi. It works but it is not a camera I would take with me because it needs a large battery. There is one in my phone which is easier to use. If I wanted a better camera than the one in my phone I would buy one. The only advantage the Pi camera is that you can attach a big hdmi screen. An interesting project, if you want to make a camera for a particular purpose.