One way that Audioholics have presented on-axis and off-axis frequency responses in our loudspeaker reviews are through waterfall plots. Wikipedia defines a waterfall plot as: “a three-dimensional ...

Keywords: Earthquake Engineering; Steel; Plate; Shear; Wall; Inclination angle; Tension; Field; LS-DYNA Abstract: Research was conducted to investigate how the inclination angle of the diagonal ...

The 15mm F1.4 Fisheye is a heavyweight as far as prime lenses go. It tips the scale at 3.0 pounds and measures 6.3 by 4.1 inches (HD). The size isn't out of the ordinary, however, once you consider ...

Photographers capturing night sky images often reach for wide angle lenses to create compositions that incorporate both landscape and stars, and chase extra-bright optics to keep exposure times ...

Buying and shooting tips for different types of wide angle lenses. Wide angle lenses range from a very modest increase in the angle of view through to so-called ‘fisheye’ lenses that encompass angles ...