Don Roberts
"This bug was one of the most highly iridescent I have seen. That has always
shown up well on film before. This time digital did not capture it. Is this
characteristic of digital capture"
my answer - maybe, it depends on the bug
after all, some colours we see on insects (and birds feathers) are not
actually 'colours' but a perception of colour eminating from refraction,
interference or diffraction rather than pigment
see here for more info:
http://onlinelibrary.wiley.com/doi/10.1002/jmor.1052020106/abstract
I have experience with diffraction causing colour renderings to go askew in
digital imaging where the sensors are more rigidly structured than random
grains in film, occasionally it can be overcome by changing the distance at
which the subject is photographed.
karl