Wiki Loves monuments was a multinational photography contest run last September with the aim of getting photos of monuments for Wikimedia Commons. The participant survey has been published here http://commons.wikimedia.org/wiki/Commons:Wiki_Loves_Monuments_2013/Participants%27_Survey/Results_2012
Interestingly whilst the participants are strongly skewed to men, women are a much larger minority than amongst wikipedia editors.
Regards
Jonathan