ALPA HPF高精度聚焦环，用于施耐德ALPA Apo-Helvetar 5.6/48 mm和施耐德Apo-Digitar 5.6/47 mm XL。
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产品介绍
ALPA HPF High Precision Focusing rings for Schneider ALPA Apo-Helvetar 5.6/48 mm and Schneider Apo-Digitar 5.6/47 mm XL - Aperture Mount or Copal size 0, scale in meter, type AAH 48-SAD 47
