I've always found the K100D Super a little small for a proper grip. My baby finger had no place to land, and this caused a balance problem with larger lenses. I also found the look a bit ungainly with the 18-250mm mounted. With the 18-250 and Sigma 530 Super flash, the camera looked tiny. I decided a battery grip would be a good solution and I found this one on eBay Canada:
battery grip for Pentax K100D super K110D - (eBay.ca item 350081772762 end time 28-Jul-08 16:26:47 EDT)
The grip arrived today. It was a smooth transaction and I left positive feedback for the selller. Here's what it looks like according to my A720:
Likes:
- smooth comfortable grip, room for all of my fingers
- 1000 shot capacity
- bulk added with very little weight
- camera looks more balanced with large lenses and especially flash
- lens doesn't fall forward in carry position. i.e. with the strap around my neck, the lens points straight ahead
- charges in wall outlet or car
- easy to fit and remove, equivalent to changing batteries
- reasonable cost
Niggles:
- fit and finish is OK, could be better, especially the slot for the battery compartment door
- with large lenses, camera tips forward when set down
- larger than it needs to be for good grip
All in all. I'm quite pleased with my purchase. It delivers well on the main points; comfortable grip and extended battery life.