I am pretty sure all of us struggle sometimes with tiny bubbles being trapped in the slides we prepare. Most of the time when tiny bubbles do get trapped, we ignore them or work around them because they interfere with the subject.
In this case, after I have finished taking photos of Oscillatoria sp. (a cyanobacteria), I saw these three bubbles. It is absolutely worthless from a scientific point of view, but I though the tonal range and composition was quite pleasing. Anyway, here it is.
Purely artistic view
Moderators: rjlittlefield, ChrisR, Chris S., Pau
The bubbles act as lenses allowing the conoscopic view of the Nomarski prims interference dark band:
http://www.photomacrography.net/forum/v ... 324#112324 , see the last image
http://www.photomacrography.net/forum/v ... 324#112324 , see the last image
Pau