Thanks to all those that responded to my A590 query!
Now onto the next question:
I just picked up an SX20IS for a good price and naturally tried to used CHDK. Used CARDTRICKS and installed the latest firmware (sx20-102d-0.9.9-985-full). CHDK seems to load fine but when I look at the photos I take, the CRW files are black i.e., no image. The file sizes seem correct but FastStone reports an 18MB file which appears correct.
Any thoughts as to what is happening?
Thanks in advance,