BCB Exif tool

Another useful and powerful exif modification and read tool.

based on its clear definition and explanation on EXIF tags and all other related hidden information, the power the tool is expected.

http://www.sno.phy.queensu.ca/~phil/exiftool/index.html

however, no source code is provided. anyway, take it as a target to finetune code is also a good isea.