Rocky Nook Astrophotography by Thierry Legault newsigma this zoom lens balances both

this zoom lens balances both a versatile focal length range along with a sophisticated optical design for maintained image quality

despite the absence of a mechanical shutter

The shoe-mounted flash head tilts upwards 90° and rotates 180° in both directions for complete 360° coverage

When partially opened

the advanced optical design features a Super Spectra Coating

Rocky Nook Astrophotography by Thierry Legault newsigma this zoom lens balances bothTodays photographic equipment allows amateurs to take pictures of the stars that far surpass images taken just a few decades ago by even the largest observatories and this book will teach you how. Author and world renowned astrophotographer Thierry Legault teaches the art and techniques of astrophotography: from simple camera on tripod night scene imaging of constellations, star trails, eclipses, artificial satellites, and polar auroras to more