Pentax K-7 K-7 Manual - Page 319

317 Metering Method Brightness of subject is measured to determine exposure. In this camera, select from Multi-segment Metering, Center-weighted Metering and Spot Metering. Mired Proportional scale of measurement that consistently shows color change per unit. Determined by multiplying the inverse of the color temperature by 1,000,000. ND (Neutral Density) Filter A filter with many saturation levels that adjusts the brightness without affecting the color tone of pictures. Noise Reduction Process to reduce noise (image roughness or unevenness) caused by slow shutter speed or high sensitivity shooting. NTSC/PAL These are video output formats. NTSC is mainly used in Japan, North America, and South Korea. PAL is mainly used in Europe and in China. PNG format Images saved using this format can be compressed to a small file size, but the reversible compression of this format makes the file size larger than JPEG. This format is for use with full-color images and prevents quality loss even when re-edited. PNG files, however, cannot be viewed on older browsers (Internet Explorer 3.0 or earlier or Internet Explorer 4.5 on Macintosh). In addition, thumbnail images and image properties cannot be embedded in the data. Quality Level 10 This refers to the image compression ratio. The lower the compression, the more detailed the image. The image becomes rougher as the compression rate rises. Appendix