Rob and Geoff, please message me or email me privately (warhenk at yahoo dot com). I'd be most eager to add corrections for a future revision. I did catch one which I'm upset about- adding DSLR RAW to the BPP on pg. 58. My DSLR proofreader did not catch something in his testing. Springer will add an errata for that one soon. Inevitable I suppose, but like Juan, I like a 'perfect machine!'