Arturo,
The first image was with a 20/0.70 S Plan Apo (DIC illumination). This was a rather small specimen.
Rogelio,
This was with my "standard" setup. Olympus BHS with DIC components, 1.67NFK photo-eyepiece (with an additional 1.25X from the DIC intermediate piece... so a total, to camera, magnification of 2.1X). Canon T3i camera, flash via a Vivitar 283 flash tube. The first shot was the 20X... the other two were a 40/0.95X (dry) and (I think

) possibly a 60X oil.