Using The Built-In Flash; Setting The Flash Mode - Pentax K-r Operating Manual

Using the Built-in Flash

Use the following procedures to take pictures in low light or backlit
conditions and when you want to use the built-in flash.
The built-in flash is optimum for a subject at a distance from 0.7 m to 5 m.
Exposure will not be properly controlled and vignetting (darkening of the
corners of the image due to a lack of light) may occur when used at a
distance closer than 0.7 m (this distance varies slightly depending on the
lens being used and the set sensitivity (p.178)).
Compatibility of built-in flash and lens
Vignetting may occur depending on the lens being used and the
capture conditions. We recommend taking a test shot to check the
compatibility.
1 Lens Compatibility with the Built-in Flash (p.179)
• 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 the
lens aperture ring to s (Auto).
For details on the built-in flash and instructions on how to take pictures with an
external flash, refer to the "Using the Flash" (p.173).

Setting the Flash Mode

Flash Mode
Auto Flash
C
Discharge
Manual Flash
b
Discharge
Auto Flash+Red-
i
eye Reduction
The camera automatically measures the ambient light
and determines whether to use the flash. The flash
pops up and discharges automatically when necessary,
such as when using a shutter speed which is likely to
cause camera shake or in backlit conditions (except
when in s (Landscape), \ (Moving Object) or l
(Night Snap) in H (Scene) mode). The flash may pop
up but may not discharge if the camera determines that
the flash is not necessary.
Discharges the flash manually. Discharges when the
flash is popped up, does not discharge when retracted.
Discharges a pre-flash for red-eye reduction before the
automatic flash.
Function
75
3