Thanks Mick. I've just looked through another book on the A100. The camera will only take 3 images continuously using RAW + jpeg and 6 using RAW alone. This is because of the transferrance rate of buffer to memory card.

If any Sony A100 users are reading this post, get hold of the book, Sony a DSLR-A100 Digital Field Guide, by David D Busch (IBSN 978-0-470-12656-1). Apologies if I've broken forum rules doing this plug.