A table full of priests in Noto, Sicily.

In Islam, it is haram to take pictures of people without their permission.  Ideologically, it is tied to frivolous or indulgent pursuits and should not be displayed.  So you could take a picture of a significant event to preserve the memory, but it should not be displayed on the wall for others to see.  I had to shoot this over the shoulder of another person, because of the people I was with, we were split as to whether or not it was taboo to take a picture of a priest.  (Hijab to Wimple to Clerical Collar?) But we could find no reference to anything saying a priest should not have his photo taken, nor a nun for that matter. As a side note, I learned a solid life lesson – don’t google taboo and nun, it’s really disturbing.