PP-HK wrote: wtlam wrote: 我又想問下, canon 的鏡頭係咪有分II, III, USM & IS, 係點解呢? Thanks II、III就唔多見, 通常係I、II, 代表係第一代或第二代, 第二代係第一代既改良版。USM即UTLRA SONIC MOTOR超聲波馬達, 有左佢對焦會快同淨好多。IS即IMAGE STABILITY防手震鏡咁解, 有左佢影相時會穩定好多。
wtlam wrote: 我又想問下, canon 的鏡頭係咪有分II, III, USM & IS, 係點解呢? Thanks
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