有冇簡單方法將彩色相轉成黑白?

1) You may install the following freeware.
http://cdn.simtel.net/pub/simtelnet/win95/grafview/iview398.exe
2) Using the above freeware to open the picture,then,
Image > Convert to grey / negative ...
3) You can use it for simple touch up your picture as well.
4) It is a picture viewer with thumbnail.
5) It can batch change file type, resolution,....

photo impact

用 google Picasa2 相片程式

用 AcdSee 吧．

http://www.acdsee.com/