[Rockhounds] New Idria cinnabar

[DonH]

Pmodreski at aol.com wrote:

> (and now, perhaps Don or someone will give a short simple explanation of  
> what photo stacking means. 


In essence it is a "false 3D", in the sense that you can take numerous 
photgraphs at various depths of focus under a scope, and then combine 
the images so that the focused slices are "stacked" into one final image 
where everything appears to be in focus.  This is important because a 
microscope has a poor depth of field, especially under higher 
magnifications, and you can often only focus on one area at a time while 
other areas are out of focus.

Micromounters often have a big problem with this, since crystals are 
usually large or standing up, and you cannot bring the whole thing into 
focus at once.