Portrait photography can convey emotion through the subject and their clothing. Experimental techniques like double exposure can change the mood of an image, such as making a sunny field appear gloomy by dressing the model in dark clothing. Landscape photography focuses on nature and lacks human activity. It allows viewers to see places they may never visit in person. Fashion photography is used extensively in advertising and emphasizes a model's look through styling and creative backdrops that relate to the clothing's style. Key factors to consider when taking photos include lighting, aperture, shutter speed, focus, colors, and post-processing techniques.