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旧 Dec 28th, 2012, 18:34     #68
老广
软件基本靠载 硬件基本靠拆
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虽然17-40是比较好的性价比,但是2.8光圈的变焦头总是CLASS A的。如果是定焦(非微距头)就要更大光圈的(200MM以上例外,光圈没那么大),买回来想出手都不太难。所有人买东西都是升级的,没有人降级。道理就是这样。买了个好头慢慢用,就是押了资金。玩厌了还可赎回大部分本金。
变焦头基本是F/2.8 > F/4 > 变光圈的头。
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