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Just wanted to share an idea for taking better stack of photos when imaging microfossils. For some background, ostracods, foraminiferia, conodonts and scolecodonts are three dimensional despite their small size. As microscope magnification is increased a smaller and smaller vertical section of the fossil is in focus making it nearly impossible to take a decent photograph. Stacking software (e.g. CombineZP, Helicon Focus) permits you to take a series of photographs at different focal planes and the software then creates a composite photo taking just the in focus parts of each photo in the stack. My microscope doesn't have a fine adjustment knob which made it difficult to take many photos in a stack before the complete fossil was out of focus. I recently purchased a small vertical stage with micrometer on Ebay under Opto-mechanical stages (usually used to adjust mirrors and such in laser setups). The micrometer moves the stage vertically 0.5 mm (500 microns) per revolution of the micrometer and it smallest vertical move is 2 - 3 microns. This allowed me to increase the number of stack photos and hence the focal planes when trying to capture the ornamentation of ostracods and the tooth-like projections on scolecodonts. Check out some of my recent galleries: http://www.thefossil...hale-ostracods/ http://www.thefossil...n-microfossils/