1.定焦镜头相对于变焦镜头的区别在哪?
定焦镜头-优点:成像质量高,有质感,可获得更大光圈,比如f/1.4, f/1.2;价格上比变焦便宜。
缺点:拍摄物体取景时,只能靠人的走动;
2.广角镜头,长焦镜头如何区别?
以135相机视窗框为准,28–35mm是广角镜头,45–55mm是中焦镜头,90mm以上是长焦镜头;

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