Pentax K10D - Using the Built-In Flash

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Basic Operations
Using the Built-in Flash
If you wish to discharge the flash in a dark or backlit location, press the
K button to pop up the flash. Select a flash mode to suit your purpose
from the Flash options screen in the Fn menu. You can adjust the flash
output with the rear e-dial in any Exposure mode other than Green mode.
The built-in flash is optimum at about 0.7 m to 4 m from the subject.
Exposure will not be properly controlled and vignetting may occur when
used at a distance closer than 0.7 m (this distance varies slightly
depending on the lens being used and set sensitivity (p.176)).
C
Auto discharge
Discharges the flash automatically in dark or backlit
locations.
D
Auto flash+Redeye
reduct
Lights a red-eye reduction light before automatic flash.
E Flash On Discharges the flash each time.
F Flash On+Red-eye
Lights a red-eye reduction light before discharging the
flash with Flash On.
G
Slow-speed sync
Sets the shutter speed slower depending on the
brightness. Use this when shooting a portrait in front of a
sunset or other scenery to capture both the person and
background clearly.
H
Slow-speed
sync+Red-eye
Lights a red-eye reduction light before discharging the
flash with Slow-speed sync.
I
Trailing curtain
sync
Discharges flash immediately before closing the shutter
curtain. Capture moving images as if they are leaving a
trail behind.
When using Slow-speed sync or Slow-speed sync+Red-eye, the shutter speed
becomes slower depending on the brightness. Use Shake Reduction (p.67) or
fix the camera on a tripod to prevent camera shake.
Compatibility of built-in flash and lens
Vignetting (darkening of the corners of the image due to a lack of light) may
occur depending on the lens being used and the capture conditions. We
recommend taking a test shot to confirm this.
1 DA, D FA , FA J, FA and F Lens Compatibility with the Built-in Flash (p.177)
• When using the built-in flash, remove the lens hood before shooting.
• The built-in flash fully discharges for lenses without a function to set
aperture lens ring to s (Auto).