菜鸟问题. 老看见这个镜头的快和慢,是指什么?

所有跟帖： 

• 快慢是说光圈。光圈大的镜头可以用更快的快门（在同样 -moab- ♂ (76 bytes) () 12/16/2006 postreply 17:32:37

• "f/1.4 is much "faster" than f/5.6" It is 16X to be exact -zzyzx- ♂ (19 bytes) () 12/16/2006 postreply 18:18:51

• huh? 16X? It's better to use the f-stops--no confusion there. -moab- ♂ (0 bytes) () 12/16/2006 postreply 18:57:52

• "It's better to use the f-stops--no confusion there." Then ,don -zzyzx- ♂ (0 bytes) () 12/16/2006 postreply 19:41:49

• 'nt bother, computer calculates for you:) -zzyzx- ♂ (0 bytes) () 12/16/2006 postreply 19:59:54