Pentax K100D User Manual - Page 56

54 Using the Built-in Flash Basic Operations Use the following procedures to take a picture in low light or backlit conditions or when you want to manually use the built-in flash. 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.156)). Compatibility of built-in flash and lens Vignetting (darkening of the corners of the image due to a lack of light) may 3 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.158) • 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). g Auto discharge Camera automatically determines surrounding light and built-in flash pops up. The flash pops up and discharges automatically when necessary, such as when using a shutter speed likely to cause camera shake or in backlit conditions. (The flash may pop up but may not discharge if the camera determines that the flash is not necessary.) h Manual discharge Discharges flash manually. Flash discharges when popped up, does not discharge when retracted. i Auto flash+Redeye reduct Lights a red-eye reduction light before automatic flash. j Manl flash+Redeye reduct Discharges flash manually. Lights a red-eye reduction light before manual flash. Manual discharge mode (Flash ON) is used regardless of flash mode settings if the K button is pressed to pop up the flash manually. Selecting Flash Mode 1 Press the { button. The Fn menu appears. Fn OK AUTO Fn Exit