Here are some diatom photos I processed today using Helicon Focus 6 – the pictures are either combined across 20-26 sub-frames or 3D models produced from that data.
All on Zeiss IM microscope with Bresser MikrOkular camera.
Preparation for photography of these samples included 20ml pipette in jar – 5ml formalin 10% added to kill specimens so that they don’t move during photography – important when taking pictures at different focus distances. Helicon does not really work on live specimens!
Diatom as in life:
Combined frame – great views of organelles. Note also the large number of bacteria in the slide (small dark rods):
Empty Diatom Skeleton:
Combined frame – shows segmentation of diatom skeleton well:
Diatom skeletons and Volvox (green circles in middle):
Following are variations on above using different settings for smoothing and radius in Helicon Focus – variously brings out more or less the foreground diatom skeleton that goes from top to bottom just to right of Volvox: