Thanks shu and stan. Stan, I'm traveling through Thailand at the moment (almost semi-resident really) and this was taken in a Thai National Park called Kao Yai. There were quite a few butterflies but this had the 'red' factor. It was huge, probably close to a 5" wingspan. This isn't a crop (well, very slight rotation) and the close up detail is incredible but it can't really be seen at this size. Regards, Najinsky.