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P H O T O G R A P H Y C O N T E S T Sponsored by A.J. Hirsch |
4U CONTEST - UNIVERSITY
SPH4U
Controlling Photographic Variables
Each entry will involve either two or three photographs of the same subject showing the effects of changing a specific photographic variable. Examples of variables are:
- polarization of light
- vertical versus horizontal polarization of reflected light.
- polarization of scattered light.
- polarization by double refraction.
- determining stress in plastic models.
- interference and/or diffraction of light.
- reflection versus transmission in thin film interference.
- using star filters.
- using diffraction gratings with different numbers of lines per centimetre.
- controlling depth of field.
- by changing the focal length of the lens.
- or by changing the lens aperture.
- controlling special effects.
- using shutter speed priority to alter exposure time of a moving subject.
- controlling film speed (ISO speed).
A title and 1.5-spaced written explanation between 150 and 250 words in length must accompany each entry. The explanation must be written by the student and demonstrate the student's understanding of the physics principles involved in the situation.
