every photo needs light to be created. you want the light in the image to focus on the object you are taking a picture of. No matter how big or small every photo has a .subject A subject can be any part of the frame or just an idea. Composition is an image is how the elements in the frame relate to each other. This can be a huge factor in capturing the perfect photo. Critiquing an image should always be done with the intent to help, and critiquing photos needs to be done with certain skills. Writing a photo critique needs to be done very carefully with lots of detail and constructive criticism. Photography comes from the french word photographie which is based on the Greek for light stylus. In a span of 200 years the camera has evolved from a small box to a high tech camera that can be almost anything.