In my first photogram I used tape and buttons. It shows various principles of art and design such as variation, balance, line, shape and texture. I set the aperture to f.16 and did two exposures, one six second exposure, and then I moved one of the buttons and added an additional two seconds for a total of eight seconds.
In my second photogram I used buttons and loose wrinkled saran wrap. Some principles of art and design I used are variation, line, texture, shape, movement, and contrast. I did five exposures with the aperture set at f.16. The initial exposure was four seconds and then I did four separate exposures where I took buttons off each time. The total exposure time was eight seconds.