A person that works in sourcing would most likely work with a fashion designer, an accessory designer, and even a photographer. They would need other people to help them set up displays, drawings, sewing, etc.
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A photographer might be interested in capturing the human element because taking a picture of an actual human may be more natural then taking a picture of something else. I also think that since humans do things all the time that are interesting it makes sense if you would want to capture it.
D Emphasis be cause you are drawing attention to the object