The only difference between the SP1000 and the SP500 is the speed knob. Supposedly the 1/1000 second speed on the 500 is un calibrated and may be slow. I have both and can't tell the difference.
One of Pentax's brilliant marketing moves. :) Powell >I'd venture 90% of one's photography occurs at or below 1/500th of a >second. Other than that, it's an SP1000... >keith

