Courtesy of Hobby Mounts
Ultimately, the better the camera, the better your image quality will be. Most hobbyist or commercial drones will use either a 1/2.3” sensor, the larger 1” sensor or even a Micro 4/3 sensor. The bigger the sensor, the better the overall all image quality/resolution. Some will even give you a mechanical aperture or the ability to swap lenses or optical zoom.
Most consumer drones over £400 will come with a stabilizing gimbal of some description, either 2-axis or 3-axis. 3-axis would give a more stable platform and therefore would allow for the most stable camera and crispest images. Some gimbals will also allow for the camera to be panned in a clockwise or anti-clockwise direction
Choose a drone which will accept filters, that way you have more control over the way your camera sees a scene. Circular Polarizing Filters help to remove reflections, which can be advantageous for certain shots such as shooting over water, snow or other reflective surfaces. Also consider Neutral Density (ND) filters which allow more control of exposure and enable greater creativity.