Just got a new set in Taipei for NT$18500 (S$880). So far tried shooting at 50mm & 150mm, and at both end giving a very reasonable sharp images. Will be trying out the lens at low light tonight at Yu Ren Ma Tou. Will update results later.
But for the price of S$880, very reasonable so far. With an extra S$60, got myself a 67mm Schneider digital ultravioleta filter. The 77mm is only abt S$86, which i also bought 1.