If photographing the sun throughout the year in the same place and same time, and make a typesetting of these images, figures out how are you who are on the web:
Analemma is called, and is due to the difference between the mean solar day (the one that marks our clock) and true solar (varies because the orbit is elliptical and the axis tilt globe with the plane of the ecliptic).
LASL
If a photo includes an eclipse, is called tutulema.
If you want to know more, this is related to the so-called equation of time. Watch this funny link:
http://www.juntadeandalucia.es/averroes/iesgaviota/fisiqui/relojsol/horas.htm
Alcad.
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