Sigma Corporation (www.sigmaphoto.com) is pleased to announce the availability of two new, high-value lenses: the 18-50mm F 2.8-4.5 DC OS HSM and the 50-200mm F 4-5.6 DC OS HSM.
Archive for June, 2009
Canon standard 50mm Primes
On June - 18 - 2009
The 50mm lens are sometimes called standard lens because they closely match the magnification of human eye. Like most fixed aperture lenses, these 50mm primes have much brighter aperture (smaller F number) than zoom lenses. Read the rest of this entry »
ISO
On June - 16 - 2009
ISO is the measurement of sensitivity of the image sensor. The lower the number the less sensitive the camera is to light and the finger the grain. Higher ISO settings allow faster shutter speeds, but at a cost of noisier shots. Read the rest of this entry »
