The Moon rules "images". She also rules "silver" (back in the days of film, silver compounds were the photosensitive component). She is illusion, reflection and so forth.
The Moon is, in her nature, photographic. (She rules memory [photographic memory], and photography captures images to stimulate our memory; a photograph is a memory on paper).
Venus is concerned with "beauty" and "artistic expression". Photography as art is associated with Venus.
Photography, in its essence, is "the capture of light." It fixes a moment in time by recording light as it was at that moment. A photograph is not concerned with objects or forms of themselves, but with the light they emit or reflect.
The Sun is the source of all light. The Moon rules mirrors and reflections.
A photograph is in essence a "document". Documents are found in the Third House. If the photograph conveys "news" or "information", that is also a Third House matter.
But the Ninth House might hold "travelogues" or "foreign correspondent" genres of photography. Photography used primarily as an investigative tool in such things as scientific research would also be contained in the Ninth.
There are other examples, with different houses. Photography as career, or the means of social prominence or recognition is primarily a Tenth House affair.
I know I haven't answered your questions. I hope this helps you see "how to think" about photography in the horoscope.
Only analysis of a particular horoscope will really do. As you can see, to say that "this horoscope proclaims talent in photography" demands the synthesis of a complex of factors.
What makes for an outstanding photograper? To answer that question, look at the charts of well-known photographers; study them.