There are many different camera apps around, but personally I prefer Open Camera. It’s very user-friendly, adjustable (I also put a zoom-slider on the screen 
) and fast.
About the camera module itself, some people are apparently disappointed. For me, it is good enough and many other people succeed in taking very nice pictures. It’s also o secret Fairphone is working on an upgrade for the camera module. If you are not satisfied with the camera, it should be possible to upgrade it when the new module is launched.
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