Made by a Spanish company, it replaces the vertical support and focusing arrangement of the microscope, replacing it with custom-engineered metalwork, gearing, step-motor and software control to govern the lowering of the optical pod secure to the top of is in accurately stepping the descent of the pod by a few microns between each exposure. It's worth adding that there *is* a macro-rail solution for photomicrography. AIR, the parallax effect is one that is treated differently according to the algorithm selected? In simple terms of keeping the lens-to-object-critical-focus distance the same or not, I'm sure he's right - but without understanding (and I don't) the detail of the software image stacking process there is the lack of a complete explanation.ĪIR all the main 'stacker' software packages actually contain more than one stacking algorithm for keenies to choose between in combining their stacked images, so as to be able to select the one that provides the most pleasing effect from the multiple stored images of a single object delivered from the digital camera. I also see where Ron is taking his explanation but I remain to be convinced. Hence the slight sense 'weirdness' sometimes felt when looking as a well-stacked photo. My sense of it is - as Dave explains - that the brain is presented in 2-D with an all-sharp image of a 3-D object in a way that eyes used directly never can. It would be interesting to find out how the photos compare in the method that they were "stacked".ġ4th Sep 2015 13:05 UTC Owen Melfyn Lewis Bob, In photomicrography, stacked images are all necessarily "rail stacked", so their is no basis for comparison. ![]() This difference can be perceived as an apparent presence or lack thereof of depth. Whereas "focus stacking" preserves parallax throughout the stack. Rail stacking completely eliminates parallax in the resulting images. Focus stacking is performed by keeping the specimen and camera stationary and changing the focus of the lens to create the photo stack. Rail stacking is when the camera or specimen is moved to move the focal plane through the specimen to create the stack. There is a real difference in photos when "rail stacking" is used as opposed to "focus stacking". One respondent thought it might be do to stacking. Pellar Expert In another thread, that was closed to further discussion prematurely, Bob Harmon alluded to a perceptual difference between some hi-def macro photos. Recent Images in Discussionsġ6th Aug 2015 19:24 UTC Ronald J. Currier Digital LibraryOpen discussion area. Techniques for CollectorsOpen discussion area. Minerals and MuseumsOpen discussion area. Mineralogical ClassificationOpen discussion area. Lost and Stolen SpecimensOpen discussion area. ![]() ╳Discussions □ Home □ Search □ Latest Groups EducationOpen discussion area.
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