The professional photographer doesn't change anything about the purely technical aspects of the image, though (which is defined only by the sensor and lens). Th

The professional photographer doesn't change anything about the purely technical aspects of the image, though (which is defined only by the sensor and lens). This isn't about magically improving crappy photos but rather improving photos taken with a crappy lens (an obvious application would be cameras in phones). That a good photographer is able to deliver a far better photo despite the constraints of his tools goes without saying, but it's not what this is about.