All posts by Greg

Structural colour

The irridescent blue seen in this macrophoto of a Morpho Rhetenor butterfly is due to structural colour – not  pigment.  The butterfly’s wing scales have microstructure which act like a specialised diffraction grating, so it is an interference/diffraction grating effect that gives the striking blue colour – visible over a wide range of angles.  It is in fact an example of a natural photonic crystal structure – something that I researched for a few years at the University of Southampton.  Possibly one of the most impressive Icons of Science meeting Art 🙂

See my 20-page Review Article titled “Biomimetically Inspired Photonic Nanomaterials” for more information.

Enormous cloud panorama

The original of this image was created using 23 overlapping frames (Canon 5D MkII and 50mm prime lens) giving a 13739 x 7896 pixel image 🙂  Photoshop struggled with the 1Gb file.

Apparently this image was shown on last night’s (26/05/2011) Meridian weather – but I missed it 🙁

Canon 5D MkII HD video

And here’s a video of the nesting Blue Tits taken with the Canon 5D MkII the 100-400mm zoom lens and the 2x teleconverter.  Manual focus, ISO 100, program mode.  This video is an MP4 conversion and is only around 20Mb or so in size – the original HD video straight off the camera is around 2Gb and of much higher quality.  Seeing these little guys full screen and in tight focus on the monitor is pretty amazing.