I did bracket but I did not composite the images into an HDRI. I just picked out what I though was the best of the exposures and worked from there. My main concern was to get some detail in the window area and not have it blown out. I then worked on the surrounding areas and the man praying to bring them up from a silhouette to where there was some detail.
I realize that there is some noise in the praying subject but, I just let that go after some minimal noise reduction.
I would normally have used a flash to fill light the man praying but, the Blue Mosque is an active house of worship so I thought that it would be more respectful to shoot only available light...
I did use flash-fill with some shots in the Hagia Sophia. opposite from the Blue Mosque, since it is no longer a house of worship (after being a Byzantine Cathedral and a mosque). It is now a museum...
ISO 2000 1/60 second @ f/4
See my Istanbul gallery at:
http://rpcrowe.smugmug.com/Other/Istanbul/i-HRDXGvr