As a photographer, when you choose to highlight a specific idea, subject, method, or area of interest with your images, you convey a certain narrative to the audience. This narrative can be interpreted in many ways, depending on the viewer's perspective and understanding of the subject matter.
While a photographer may not necessarily convey a definitive moral value, they can evoke emotions and thoughts that may lead to the viewer forming their own moral judgments or values based on the subject matter presented.
It is also possible that a photographer may not have any particular opinion or bias and simply present their images as a way to capture and document reality without any subjective influence.
Overall, the message conveyed to the audience through a photographer's work depends on the intent of the photographer, the subject matter, and the way the viewer interprets the images.