And in other news.....

[Liney]

http://www.abc.net.au/news/2018-02-14/atom-photo-taken-with-ordinary-camera/9445288 (http://www.abc.net.au/news/2018-02-14/atom-photo-taken-with-ordinary-camera/9445288)

I don'y know what the camera was, but I'd like to know what the "lens accessory that increases the focal length of an existing lens" was....

[ameerat42]

Probberly a close-up attachment of some sort. Don't expect the media to be right.
Certainly it's not an atom, but the light it's re-emitting from the laser illumination. Not a bad
feat to get such from a single atom, though.

[John King]

A Barlow lens; a teleconverter attached to the rear of a lens ... :nod:

Also a filter type dioptre (or magnifying lens group) attached to the front of a lens.