Canon has announced the RF 16-28mm F2.8 IS STM, a fast wide-angle full-frame zoom that's meant to be a more budget-friendly ...

Example: APO-Summicron-M 50mm F2 ASPH. Most modern-day Leica lenses have the ASPH. abbreviation tacked on to the end of the ...

There are no bells or whistles here, just everything you need in a simple prime lens. The Panasonic 15mm is made up of nine elements in seven groups, which include three aspherical lenses.

This compact lens is made up of nine elements in seven groups, which includes three aspherical lenses, while the aperture comprises seven diaphragm blades. These work well to produce impressive ...