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

shutterbug

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.

nikonian

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

MoiRhapsody

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。

notgoddy

Why not just use a telescope?

chobit

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