Unverified90% confidenceFactTime unknown
APS-C画幅计算等效焦距需乘约1.5倍(佳能1.6倍),M4/3画幅乘2倍,选广角镜头时要注意小画幅上广角端会变窄,如16mm在M4/3等效32mm不再是广角
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