Sigma 19mm f/2.8 DN Art 鏡頭 (Micro Four Thirds)

This little lens is incredibly sharp even wide open, and the all-metal barrel feels surprisingly premium for how light it is. I've been using it for street photography and love how discreet the whole setup becomes.

Sharpness is excellent even wide open, and it’s impressively compact for a wide-angle prime on my mirrorless body. Only wish the metal hood came standard instead of paying extra, but the optical quality makes up for it.

For the size and weight, the 19mm focal length is surprisingly versatile for street shots. Build quality feels solid, though the manual focus ring is a bit stiff right out of the box. Image sharpness at f/2.8 is excellent for the price.