二手 Sigma 105mm F2.8 EX DG Macro OS（Nikon 用）

The autofocus on this used copy is quicker than I expected, and the optical stabilization really helps when I'm hand-holding it for tight shots of insects. I've already used it for a few portrait sessions too, and the sharpness at f/2.8 is impressive for the price I paid.

Took this lens out for some flower close-ups and the OS really helps steady the frame at 1:1 magnification—crystal clear results every time. The metal barrel feels solid, no wobble or looseness despite being used.

Picked this up as a used lens and the focus ring has just the right amount of damped resistance, making precise adjustments a breeze. The F2.8 aperture gives lovely background separation for flower close-ups. Very pleased with the clarity it delivers.