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:
Notice that since I took a direct quote from John Smith's book, I placed those words in quotation marks. Notice also that I placed the date that the book was published directly after the author's name in parentheses--this is proper APA format. Finally, notice that because I explained WHO wrote the book and WHAT book it comes from, the reader is easily able not only to find the source on his/her own to check my facts, but the reader is also more likely to believe what I have to say now that they know that my information comes from a credible source.
An orange grown in Florida usually has a thick and tightly fitting skin, and is also heavy with juice. Californians say that if you want to eat a Florida orange you have to get into a bathtub first. California oranges are light in weight and have thick skins that break easily and come off in hunks. The flesh inside is marvelously sweet, and the segments almost separate themselves. In Florida, it is said that you can run over a California orange with a ten-ton truck and not even wet the pavement. The differences from which these hyperboles arise will prevail in the two states even if the type of orange is the same. In arid climates, like California's, oranges develop a thick albedo, which is the white part of the skin. Florida is one of the two or three most rained-upon states in the United States. California uses the Colorado River and similarly impressive sources to irrigate its oranges, but of course irrigation can only do so much. The annual difference in rainfall between the Florida and California orange-growing areas is one million one hundred and forty thousand gallons per acre. For years, California was the leading orange-growing state, but Florida surpassed California in 1942, and grows three times as many oranges now. California oranges, for their part , can safely be called three times as beautiful.