烟墩角出事了
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maomao1234555 中级会员正解似乎是Sigma APO 200-500/2.8 EX DG。
Pre-PMA 2008: As part of Sigma's bumper lens launch, it has announced what might be the ultimate wildlife lens. Sigma claims the APO 200-500 f.2.8 is the world's first lens to offer an f/2.8 aperture at 500mm focal length. It comes with an "attachment" to give users a handy 400-1000mm f/5.6 option. The lens (which is cosmetically reminiscent of a piece of military hardware) weighs nearly 16kg and uses a dedicated Li-ion battery to provide power for focusing and zooming. It will be available in Sigma, Canon and Nikon mounts.回复：8楼 名利场摄影什么地方有介绍SIGMA 100-500 F2.8 镜头的？引用:作者: wbm22万，100-500 F2。8 -
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jns 新会员好头！！回复：9楼 maomao1234555正解似乎是Sigma APO 200-500/2.8 EX DG。
Pre-PMA 2008: As part of Sigma's bumper lens launch, it has announced what might be the ultimate wildlife lens. Sigma claims the APO 200-500 f.2.8 is the world's first lens to offer an f/2.8 aperture at 500mm focal length. It comes with an "attachment" to give users a handy 400-1000mm f/5.6 option. The lens (which is cosmetically reminiscent of a piece of military hardware) weighs nearly 16kg and uses a dedicated Li-ion battery to provide power for focusing and zooming. It will be available in Sigma, Canon and Nikon mounts.
