the.com/fast glass
a lens that drinks light so greedily night looks like noon.
means a camera lens with a very wide maximum aperture, letting in lots of light and blurring backgrounds hard.
from photographers started rating lenses by f-stop speed once film sensitivity became the bottleneck, so a lens that let you shoot at faster shutter speeds in dim light earned the nickname fast.
the numberf/1.4 or wider usually earns the label
tradeofffaster glass means heavier, pricier, harder to make
bokeh bonuswide apertures melt backgrounds into creamy blur
low light kinglets you shoot handheld in near darkness