Raspberry Pi Foundation provides an official cameras for Raspberry Pi.  A list of Raspberry Pi cameras can be found at https://www.raspberrypi.org/documentation/hardware/camera/README.md. I have two official camera modules from Raspberry Pi. They are Pi Camera v2 and Pi NoIR Camera v2. You can see them in the following image:

To work with Pi Camera, I recommend to read the official document on this site at https://www.raspberrypi.org/documentation/raspbian/applications/camera.md. You also can learn Pi Camera on this site, https://projects.raspberrypi.org/en/projects/getting-started-with-picamera/. After taking a picture using Pi Camera, you can start to write a program to upload to Amazon S3.

Another solution for Pi Camera is that you can use any camera USB that is attached through USB from Raspberry Pi. Make sure that you can access it and click a picture.

We will upload a picture file to Amazon S3 in the next section.