RONKONKOMA, NY — June 19, 2015 – Sigma Corporation of America, a leading DSLR lens and camera manufacturer, today announced the Sigma 24-35mm F2 DG HSM Art lens, the market’s first full-frame zoom lens offering a wide-open, constant aperture of F2 throughout the zoom range. Pricing and availability are pending. With the development of this latest Global Vision […]

Yesterday, just in time for tomorrow’s start of the CP+ Camera and Photo Imaging Show 2015  in Yokohama, Japan,  Sigma Corporation of America announced the new Sigma 24mm F1.4 DG HSM Art lens, the ninth Global Vision lens to join the company’s excellent Art lens line-up. The much anticipated 24mm F1.4 DG HSM Art wide angle lens is designed for full-frame DSLRs, and when used on […]

The Art Of A Focus Puller One of the least expensive and most versatile lenses in any filmmaker’s bag of tricks is the 50mm lens. Check around, almost every manufacturer sells a “nifty fifty.”  Considered by many to be the default “normal” human vision equivalent, there are more 50mm lenses in existence than the next two focal lengths combined.  If […]

Most of us as photographers have heard the term “Specular Reflection.” Certainly all of us have seen examples of it. But just what does “specular reflection” mean in a technical sense, and how does it impact our photographs?  Reflections on still water, as in the above image of Tso Moriri Lake, Kashmir, India, from Wikipedia […]