Saturday, 08 December 2018 11:06

Solar Condensation and a Wet Rock

Drosera rotundifolia, common sundew, is found around the globe in all sorts of bogs and marshes; but in the Southern Appalachians it can also be found on rocky outcrops in high elevations. Percipitation falling on these outcrops percolates downward with the help of gravity until it finds a way to the stony surface. In this way tiny wetlands - called "seeps" - are formed which become ideal habitats for these tiny splatters of carnivorous sunlight. Sundew leaves are coated with drops of a sugary, sticky mucilage, which to a small insect is just what the dietitian ordered. Insect walks in, lunch is served.

A focal length of 300mm provided magnification and the narrow angle-of-view I wanted. An aperture of f/22 provided depth-of-field; and a shutter speed of 2.5 seconds in windless air at ISO 100 gave me an overall somewhat darker-than-medium exposure that was tempered by a small, gold reflector.

The rock faces of these old mountains contain many treasures. One of these is a tiny plant called sundew.

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