用F5还是摄影盲 啊?

镜头看你平时用相机来拍什么, 如果一镜走天下那就买Tamron的28-300mm, 便宜而且覆盖焦段很广!

大概$300-$400 的样子:

http://www.bhphotovideo.com/bnh/controller/home;jsessionid=Bu2mxGce4f!-1950903026?ci=1&sb=ps&pn=1&sq=desc&InitialSearch=yes&O=SearchBar&A=search&Q=*&shs=tamron+28-300mm