Pentax K20D manual Changing the Exposure Mode, Noise Reduction, Slow Shutter Speed NR

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4 ShootingFunctions

Noise Reduction

When you use a digital camera to shoot with a long exposure or high sensitivity setting, image noise (image roughness or unevenness) becomes noticeable.

You can reduce image noise by using Noise Reduction. Images shot with Noise Reduction take longer to save.

Set in [17. Slow Shutter Speed NR] or [18. High-ISO Noise Reduction] in the [ACustom Setting] menu.

Slow Shutter Speed NR

Auto: The camera determines the conditions such as the shutter speed, sensitivity, and internal temperature, and automatically reduces noise as necessary.

On: Reduces noise only when shooting at slow shutter speeds (under 0.3 seconds).

High-ISO Noise Reduction

Select the level of noise reduction from [Off], [Weakest], [Weak], or [Strong] when shooting with a high-sensitivity setting.

Changing the Exposure Mode

This camera features the following nine exposure modes.

Use the mode dial (p.32) to change the exposure mode. The settings available for each exposure mode are as follows.

Exposure		EV Com-	Change	Change	Sen-
	Description		Shutter			Page
Mode		pensation	Speed	Aperture	sitivity
	Automatically sets
	shutter speed and
B	aperture to the proper	No	No	No	Yes	p.83
(Green)	exposure according to
	Program line when
	taking pictures.