Pentax K20D manual About the Green Button

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• Turn the front e-dial while pressing the mbutton to change the EV compensation value. (p.100)

•Set the shutter speed and aperture values in increments of 1/2 EV or 1/3 EV. Set in [2. EV Steps] in the [ACustom Setting] menu. (p.101)

•Settings other than [AUTO] are not available in [Sensitivity] in the Fn menu.

•Set the aperture to the s position while holding down the auto-lock button when using a lens with an aperture ring.

4 ShootingFunctions

Exposure Warning

If the subject is too bright or too dark,

the sensitivity display will blink in the viewfinder and on the LCD panel.

Change the shutter speed and aperture. When the indication stops blinking, you can take the picture with proper exposure.

Use an ND (Neutral Density) filter if the subject is too bright. Use a flash if it is too dark.

About the Green Button

The aperture and shutter speed are automatically adjusted to the appropriate exposure at that moment if the Green button is pressed in L(Shutter & Aperture Priority) mode. You can choose from the following three adjustment methods in [26. Green button in L& a] in the [ACustom Setting] menu.

1	Program Line	The aperture and shutter speed are adjusted
		automatically.
2	b Shift	The aperture is locked and the shutter speed is
		adjusted automatically.
3	c Shift	The shutter speed is locked and the aperture is
		adjusted automatically.

Shutter speed is adjusted to appropriate exposure according to lens aperture when lens aperture is not set to the s position.

1 Notes on [36. Using Aperture Ring] (p.251)