First off, what is this? This is a photomicrograph of dunite, an ultramafic rock composed almost entirely of the mineral olivine. The vivid colors were produced by viewing the subject, a thin section of the rock containing birefringent crystals, through crossed polarizing filters. Continue reading
Posted in Microscopy, Photographic Techniques, Photomicrography
Tagged dunite, north carolina, olivine, photo mosaic, photogrpahy, photomicrography, polarized light microscopy, science as art, thin section
Recent developments in photography have lead to a flood of great images with tremendous sharpness or resolution. Here’s an example photograph of a spherical cluster of blades of vivianite crystals from the Siglo Veinte mine, Llallagua, Potosi, Bolivia. The ball of crystals is 1 mm wide.
This photo was produced by combining the sharpest parts of 55 separate photos of the mineral; each image isolated a tiny, crisply focused level. This photo won an Image of Distinction Award in the 2013 Nikon Small World contest. But how is this done? Continue reading
Stacking lenses is an excellent way to get higher magnification in macrophotography. I’ve only recently started experimenting with this technique, but was immediately impressed by the magnification and clarity of the images.
Clued in by a good friend in Seattle, Bruce Kelly, and a post on photomacrography.net by Rik Littlefield, I bought a few new toys. Continue reading