It weighs only 36grams, but still handles well. Instead of using the direct mechanics manipulation method, its focus rings is still fly by wire. Nevertheless, the lens still feels smooth and well-dampened.
Focus performance is respectable when there is ample light present. Barrel distortion still occurs in some situation, there shouldn’t be any vignetting detected. Overall, the Pentax Q 8.5mm F1.9 Standard Prime 01 is a solid diminutive lens that’s worth its $160 price tag.