A true work of art must have a certain depth of thought. This is the common pursuit of all artists, whether it is painting, literature or photography. The depth of a work of art refers not only to the virtuosity of technique and expressiveness, but also to the thoughts, emotions and ideas contained in the work.
In photography, the depth of thought of a work may be expressed in the way it is composed, or it may be a deeper idea. Sometimes, photographers don't have a clear idea when shooting, but by observing and thinking, they are able to discover and capture some unique moments that allow them to express their thoughts and emotions. Sometimes, photographers have a clear idea and subject before shooting, and they express their thoughts and emotions through composition, light, color, etc.
It's not an easy thing for a photographer to shoot a thoughtful one. Sometimes, they need to try and practice repeatedly, constantly exploring and finding better ways to express themselves. Sometimes, they also need to reflect and examine their own works, and find their own shortcomings and areas for improvement.
However, even if the photographer captures the depth of thought, these may not be understood and accepted by everyone. Because everyone's cultural background, aesthetic concept and way of thinking are different, their feelings and understanding of the same work will also be different. Therefore, photographers need to make their work as universal and common as possible, so that more people can understand and accept it.