Pentax K-7 Noise Reduction, Expanding the Dynamic Range

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Expanding the Dynamic Range

Dynamic range is the ratio that indicates the light level expressed by the CMOS sensor pixels from bright areas to dark areas. The larger it is, the better the whole range from dark to bright areas will appear in the picture. By expanding the dynamic range, you can expand the light level expressed by the CMOS sensor pixels, making it more difficult for an overexposed area to occur in the image.

To expand the dynamic range, use [D-Range Setting] in the [ARec. Mode 1] menu. (p.199)

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.

Slow Shutter Speed NR Reduces noise during long exposures.

Set in [18. Slow Shutter Speed NR] in the [ACustom Setting 3] menu (p.86).

	The camera determines the conditions such as the shutter speed,
On	sensitivity, and internal temperature, and automatically reduces
	noise as necessary.
Off	Reduces noise only when the exposure mode is set to pand the
	shutter remains open for 30 seconds or more.

High-ISO Noise Reduction

Reduces noise at high sensitivity (ISO) settings.

Select [Off], [Low], [Medium], or [High] for [19. High-ISO Noise Reduction] in the [ACustom Setting 3] menu (p.86). You can set the sensitivity at which to start noise reduction by setting [20. High-ISO NR Start Level] in the [ACustom Setting 3] menu (p.86).