I took this while playing with a Carl Zeiss Jena Telaval 3 inverted microscope for an unrelated reason. The wing was fully within the field of view of the eyepieces using a 5x objective, but not fully within the field of view of my Nikon D5200 due to the crop factor, so i had to stitch several images together. The full size image is 69MP and was processed in Photoshop CS6.
Drosophila melanogaster wing by
Chris_Jones., on Flickr