我用600 II F4.0 + 1.4X III,都感到對焦減慢。
如照靜物,2X 還行;有人用過Canon第二代長焦 + Canon 第三代 2X,畫質還行。
我用600 II F4.0 + 1.4X III,都感到對焦減慢。
如照靜物,2X 還行;有人用過Canon第二代長焦 + Canon 第三代 2X,畫質還行。
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