Pentax DS Operation Manual - Page 197
Recorded Pixels, Sensitivity, Shutter Speed, sRGB standard RGB, Vignetting, White Balance
UPC - 027075110618
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195 Recorded Pixels Indicates the size of the image by the number of pixels. The more pixels that compose a picture, the larger the image size. Sensitivity The degree of light. With a high sensitivity, images can be shot with a high shutter speed even in dark places, reducing camera shake. However, images with high sensitivity are more susceptible to noise. Shutter Speed The length of time that the shutter is open and light strikes the CCD. The amount of light that strikes the CCD can be changed by altering the shutter speed. sRGB (standard RGB) International standard of color space established by the IEC (International Electrotechnical Commission). This is defined from color space for PC monitors and is also used as the standard color space for Exif. Vignetting 6 Vignetting occurs when portions of pictures are blackened because the subject was blocked by the hood or filter or the flash was blocked. Appendix White Balance While shooting, color temperature is adjusted to match the light source so that the subject appears to have correct color.