Originally posted by offertonhatter However as a backup body the DS is fine, just a shame about its AF speed. I wonder why Pentax have two different AF speeds?
The K10D has a stronger/faster motor. The *ist DS has a weaker motor. Why? It is called money!
The K10D also has more power thank's to the batteries - a more stable power supply.
Try out CR-V3 batteries in the *ist DS, it is like pressing a "turbo" button.
AA rechargeables - slow, slow. The *ist DS is very sensitive to the batteries in use, a drawback with using AA batteries.
The K200D is said to have more efficient power management, so perhaps K200D does not have this issue. Don't know.
But, one interresting thing here.
Samsung has not released plans for a Samsung GX-2 (replacement for GX-1S/GX-1L, their version of K200D). So it seems like they will continue selling the GX-10 (K10D) as their "entry level"-alternative.