Slideshow – A selection of marine diatoms collected with a homemade plankton net (75 micron) from Koh Kut in the Gulf of Thailand. All images are focus stacks (Helicon Focus, Method B) from short video clips traveling through focus.

Darkfield images using a 3-d printed patch stop:

• Nikon 10/0.25 Plan Phase Contrast
• Zeiss 16/0.40 NeoFluor PH2