回复：跟着也问一句：

Sigma 70-200mm f/2.8 does not have IS function (Sigma: OS, Nikon: VR). Canon's 70-200mm f/2.8 non-IS is just over $1000.

Nikon's 18-200mm f/3.5-~6 VR is $750 (out of stock) or $1000 (immediately available). Yes, f ranging from 3.5-6 is a lot cheaper.

For example, Canon's 70-200mm f/4 IS costs just over $1000 with just one stop difference from the 70-200mm f/2.8 IS.

所有跟帖： 

• 从实用角度看， -老包- ♂ (177 bytes) () 11/09/2006 postreply 10:43:27

• 回复：从实用角度看， -pieq314- ♀ (455 bytes) () 11/09/2006 postreply 11:47:00

• 多谢解答！受益了。 -老包- ♂ (0 bytes) () 11/09/2006 postreply 11:55:16

• 再次感谢,明白多了. -py11- ♀ (0 bytes) () 11/09/2006 postreply 12:00:27