Unverified50% confidenceDecision RuleTime unknown
35mm焦距是室内+街拍+人文的最全能定焦，视角接近人眼；50mm适合半身人像和日常，85mm是专门的人像头（半身/特写虚化最佳）；APS-C机身需将焦距乘1.5(索尼)或1.6(佳能)换算等效视角，如23mm≈35mm等效
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