Format for entries: A single space is used after any punctuation mark. When dividing a long word or URL onto two lines, put hyphen, slash, or period at the end of the line. Do not add a hyphen to a URL that was not originally there. Never begin a new line with a punctuation mark. Double-space all lines in a bibliography entry. Do not indent the first line of a bibliography entry, indent second and subsequent lines 5 spaces, or 1/2″ ( cm) from the left margin. Please see Chapter 11. Guidelines on How to Write a Bibliography for details.
Is it a historical photograph or a photograph published in a book that someone scanned and posted on line, is it a photograph of something like a sculpture? Is your paper focused on the work of the photographer, the makeup artist who prepared the model, the digital image enhancer who altered the image, the model? There is no single correct way to cite a photograph, because there are many different reasons to cite a photograph. Your instructor would be able to give you more specific advice. In general, though, the 8th edition of the MLA guide would say something like this: