All,
I have been puzzling over use the flash with the K10D (and K100D), so I got out the good old operating manual to get clarifiation. Then I got the cameras out to "test" what I was reading. According to the K10D manual (page 154), shutter and aperature priority will take into account the light conditions to determine if the flash is needed or not, and set the appropriate aperture/shutter speed.
Observations....
1. I set the camera up in a room with a tripod and the kit lens. I set the camera to aperture priority, with an aperture of 9.5, ISO 200, 24mm. I focused on something about 15 ft away in a dim lit room, and flash was blinking on the camera. I did not use the flash, and the shutter speed was set to 1.5 seconds. I took the picture, which was a reasonable exposure.
2. Same as above, but I flipped the flash. The shutter speed changed to 1/45. I took the picture. Result was very dark (not acceptable), even though the meter reading said it was ok.
3. Same as above with my Promaster 7500DX flash. The camera suggested the same shutter speed of 1/45. Took the picture- and it was reasonable.
4. I then tried an aperture of 6.7 with the internal flash (all other settings the same), and it was still a bit dark. the camera suggested shutter speed remained at 1/45
5. I then tried an aperture of 4.5 with the internal flash. The camera still suggested a shutter speed of 1/45. This was a reasonable picture.
Conclusion: The camera (or the user) will tell me some pics are acceptable with the internal flash that are not, and the shutter speed is not compensating appropriately for the conditions.
MANUAL
1. I then set the camera to manual, and set the aperture to 9.5, ISO 200. At a shutter speed of 2 seconds the camera told me it would be a good picture. I took the pic and it was fine.
2. I then flipped the flash, and the settings did not change
Conclusion: Manual does not consider flash as part of it's metering.
Am I missing something here?
Sorry for the long text!