20 Nov
引閃用的光纖線分成「單芯」和「多芯」兩種。
「單芯」光纖是由單一條較粗的光纖線組成，容易因為彎曲而使光線衰減50%以上，造成閃燈接收到的信號大幅減弱甚至接收不到。
「多芯」光纖則是由許多細小光纖集合成一束，比單芯光纖更耐彎曲，信號不易衰減，其中光纖線的數量和光纖品質的好壞是決定光傳導效率的關鍵因素。
FIT pro 的新款光纖線，由 613 條比髮絲還細的高品質光纖製成，整體直徑高達 1.5mm，即使彎曲也不必擔心亮度減少而產生閃燈不亮或亮度不準的情況。
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