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WOW...big submarine...200-500mm F2.8



http://www.dpreview.com/news/0801/08013101sigma250500.asp

It has an internal battery to operate the zooming and AF, also a LCD to display focal length and distance info.

isn't that the lens I've been waiting for...!  I'll go to the bank of sell my house tomorrow la!

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Why not just use a telescope?

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原帖由 notgoddy 於 2008-1-30 21:06 發表
Why not just use a telescope?

第一,冇光圈,
第二,成像唔得,
理論上係行得通,
我都聽聞過有人用DC加望遠鏡打雀,
不過就一啲都唔sharp。

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f2.8... 加多個 2x converter 都仲得...(噢...原來已經包埋...)

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