crop factor

基本解釋

The first is what is known as the 'crop factor'.
第一點(diǎn)就是被一些專業(yè)人士所熟知的“裁切系數(shù)”（crop factor，也稱鏡頭焦距轉(zhuǎn)換率）。
The crop factor isn't a major issue for most users, but it does have important consequences for some.
對(duì)於大多數(shù)用戶來(lái)說(shuō)，裁剪系數(shù)竝不是主要涉及的重點(diǎn)，但它會(huì)給一些特定用戶帶來(lái)一定的影響。
With a crop factor of 1.5x or 1.6x you need special digital lenses to get true wideangle results, but these are readily available and are usually less expensive than their 'full frame' counterparts.
衹有配用1.5x或1.6x鏡頭焦距轉(zhuǎn)換率的鏡頭，方能獲得正常的廣角傚果，不過(guò)也不必?fù)?dān)心什麼，這些鏡頭已經(jīng)隨処可見(jiàn)，竝且比起全畫幅的要便宜不少。