%27Sun Dogs%27 are officially known as %22parhelia%22 Tiny ice crystals in the air create halos by refracting and reflecting light Snow dogs are part of an ice halo ...

THE Yerkes Observatory, which has recently been completed and inaugurated, contains in its instrumental equipment the largest refractor in the world, the diameter of the object-glass spanning 40 ...

From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...

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