The camera is a tool people use to pictures.
From the fanciest of cameras right down to mobile phones, a camera combines a body with a lens.
The body either holds a roll (or sheet) of film or a digital sensor.
The lens is what we use to capture and transmit light to the film or sensor and make no mistake, it is all about the lens.
We need light transmission to be as absolutely efficient as possible. If it's not, our picture suffers.
The camera body is important, too. A good digital camera will usually have enough pixel resolution to do a poster-size print (20"x30") with no trouble, but again, if the light being recorded was of mediocre quality, our image will also be mediocre as well.
The first thing we should always do when we get a camera is to (gasp!) read the manual. We need to know exactly what it can do well before we go on vacation. Not knowing how a camera works usually leads to bad photographs.
It's as simple as that.
With every new generation of camera development in mobile phones, their quality increases to levels undreamed of only a few years ago. Mobile apps allow users to photograph, not just in the JPG format, but the far superior RAW.
RAW is what it sounds like. It is the unprocessed image that was captured by the camera's digital sensor. JPG gets processed by the camera, which actually throws away vital pixel information to get a much smaller file size.
In addition, colors that are close together, are combined for the sake of efficiency. So if you really want to take great photos, shoot in RAW.