startrack: I would rather keep using 200 , not 300 IS
DoDo: go ahead to use them. i won't charge any money i will try to put more if I have more free time these days.
GangW: I used capture one for post processing (white balance,level and contrast adjust,then RAW convert them to TIFF file). after that using photoshop to resize/sharp the picture. save to web jpg. I think photoshop strip off the EXIF info. I will try to save them in jpg instead of web jpg later.
I used photostitch comes with Canon camera.