Sony has announced the full-frame mirrorless Alpha 1 II and G Master standard zoom FE 28-70mm f/2 lens, both available in ...

In April, Sigma announced the development of the four prime lenses alongside the 18-50mm F/2.8 DC DN and the 10-18mm F/2.8 DC DN zooms. The 18-50mm F/2.8 DC DN was released in June while the 10-18mm F ...

The super-wide, super-fast and super-distorted 7Artisans 10mm f/2.8 II ultra-wide prime is equally brilliant for astro and ...

In the end, Donald J. Trump is not the historical aberration some thought he was, but instead a transformational force reshaping the modern United States in his own image. Donald J. Trump tapped ...

Rock bottom. That’s where Clemson was when they came out of their open date last season and lost to Miami and then turned around and lost to NC State the next week. The Tigers were 4-4 and ...

From the opening track, "Spherical Aberration," the rich sonic landscape envelops listeners. Halley and heralded trombonist Michael Vlatkovich's punchy unison lines, like a pair of jazz-infused ...

The achromatic doublet lens is used to minimize or eliminate chromatic aberration. Its achromatic design also helps to minimize spherical aberration. Compared with a single lens, an achromatic doublet ...

THE lens-mirror system described by D. D. Maksutov 1, in which the aberrations of a spherical mirror are corrected by a single sphericalsurfaced meniscus lens, while eminently suitable for ...

The shape of this lens produces a dramatic reduction of the spherical aberration, even for very low f-numbers. The lenses listed here have a molded aspheric surface which is fire polished. These ...