Peacock down feather

Peacock down feather

Diameter ~ 20 microns

 

On top of these fine hairs is an even finer microstructure, which is responsible for the wonderful interference colours.

I used an usharp single image for a more friendly background (I dont like hard black BGs in general)

 

 

Mitutoyo 50x, NA 0.55, tube lens: Raynox 125mm

Illumination: oblique

Done