SONY A接環有2顆 SAL75300 F4.5-5.6 71 x 122 mm (最大直徑 x 長度) 460g
SAL70300G F4.5-5.6 82.5 x 135.5 mm (最大直徑 x 長度) 760g
--- 作為對比,看看Canon家的有3顆 EF 70-300mm f/4-5.6 IS USM 76.5 x 142.8 mm (最大直徑 x 長度) 630g
EF 70-300mm f/4.5-5.6 DO IS USM 82.4 x 99.9 mm (最大直徑 x 長度) 720g
EF 70-300mm f/4-5.6L IS USM 89 x 143mm (最大直徑 x 長度) 1050g
好像小不到哪去 且望遠端光圈F5.6起跳... 說真的可以考慮新發表的RX10搞不好旅行更合用
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