Here are two books that might be of interest for Pentax users:
Andy Rouse "Life in the wild" has the form of diary in the year of wildlife shooter. Andy is a great photgrapher and is a witty, often hilarious, writer. He constantly whine about the useless meter of his Canon EOS-1v but praises the foolproof meter of the 65NII which he recently bought. http://www.amazon.co.uk/exec/obidos/ASIN/1861082681/qid=1040512520/sr=1-1/ref=sr_1_0_1/026-1848191-7736466 Another book is Mark Lucocks "Photography for the naturalist". It is shot mainly with Pentax 35mm equipment and is quite equipment specific. Not a must but could be worth looking into. http://www.amazon.co.uk/exec/obidos/ASIN/1861082908/qid=1040512728/sr=1-1/ref=sr_1_0_1/026-1848191-7736466 Pål