Thanks, Shu.
This image was made using the Pixel Bender Droste effect filter for Photoshop. You can find more about this effect (with links to the mathematics involved in the effect) and a lot of pictures here:http://www.flickr.com/groups/escherdroste/. A tutorial by Josh Summers, dealing with the Gimp/mathmap version, is here:http://www.flickr.com/groups/escherdroste/discuss/72157606654965456/. I am not quite happy about image quality, the original pic was only a test shot under low light conditions, not intended for being entered into a challenge; when I read about the new topic, I could not help but to play around until I got something that fits the topic. Perhaps I'll reshoot it.
Regards
Gerald
