Pentax on Wednesday spurred sales ahead of the PMA expo by slashing prices on its mainstream digital SLRs and launching a handful of new K2000 kits. The 14.6-megapixel K20D mid-range camera is getting an immediate $100 discount that lasts until February 22nd; the K2000 flash bundle that carries an 18-55m lens and an AF200FG external flash is also dropping permanently to $600. The special white K
