Unverified93% confidenceDecision RuleTime unknown
GR III 为定焦28mm等效广角，拍摄儿童特写需靠近，容易产生透视变形；X100系列为等效35mm，人像透视更自然但环境交代能力稍弱
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93%
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UnverifiedGR III 28mm等效焦距更适合街拍大场景与环境人像，GR IIIx 40mm等效焦距更适合人文特写与日常随拍；选购前建议明确自己惯用的焦段79% similarUnverified选择物镜口径21-25mm的入门款，口径越大越亮但越重，8x21规格镜身通常＜300g，适合儿童单手握持长时间观察71% similarUnverified分辨率至少要达到1200×1920（约300ppi以上），低分辨率屏幕文字发虚会迫使孩子凑近看，加剧近视风险70% similarUnverified等效焦距决定旅行适用场景：24-28mm广角适合风光/街拍/建筑，35-50mm适合人文/人像；固定镜头机型（如GR为28mm、GRIIIx为40mm）需按主要拍摄题材选焦段，无法后期扩展70% similarUnverified画质与便利性的典型权衡：覆盖24-105mm常用焦段一镜走天下，但相比同焦段大三元（如24-70 F2.8）弱光表现和虚化均有差距69% similar
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