Pentax K20D
DxOMark Sensor Scores | |
Overall Score | 65 |
Portrait (Color depth) | 22.9 bits |
Landscape (Dynamic range) | 11.1 Evs |
Sports (Low-Light ISO) | 639 ISO |
Information on the tested unit | |
| Type | Commercial product |
| Serial number | 2857904.0 |
Manufacturer specifications | |
| Launch date | 2008-01-23 |
| Indicative price | 770 USD |
| Sensor type | CMOS |
| Resolution | 4688 x 3124 |
| Sensor photo detectors | 14.65 Mpix |
| Size | 16.0 mm x 23.0 mm |
| Color filter array | RGB |
| Pixel pitch | 4.99 µm |
| Bits per pixel | 12 |
| Focal length multiplier | 1.50 |
| Aspect Ratio | 3:2 |
| ISO latitude | 100 - 6400 |
| Shutter type | mechanical |
| Fastest - Lowest speed | 1/4000 s - 30 s |
| Frame rate | 3 fps |
| Live view | yes |
| Stabilization | yes |
| Firmware | 1 |
MyChart
- ScreenThis tab shows the measurement values and graph derived directly from a RAW image when displayed on a computer screen at 100% magnification (i.e., one image pixel corresponding to one screen pixel).
- PrintThis tab displays the print performance measurement values and graph derived from a RAW image after a normalization step that transforms all images, regardless of original resolution, to an 8Mpix image. The print size we have chosen is a standard 300dpi 8"x12" format, which corresponds to about the physical size of an 8Mpix image printed at 100% magnification.
MyChart
- ScreenThis tab shows the measurement values and graph derived directly from a RAW image when displayed on a computer screen at 100% magnification (i.e., one image pixel corresponding to one screen pixel).
- PrintThis tab displays the print performance measurement values and graph derived from a RAW image after a normalization step that transforms all images, regardless of original resolution, to an 8Mpix image. The print size we have chosen is a standard 300dpi 8"x12" format, which corresponds to about the physical size of an 8Mpix image printed at 100% magnification.
MyChart
- ScreenThis tab shows the measurement values and graph derived directly from a RAW image when displayed on a computer screen at 100% magnification (i.e., one image pixel corresponding to one screen pixel).
- PrintThis tab displays the print performance measurement values and graph derived from a RAW image after a normalization step that transforms all images, regardless of original resolution, to an 8Mpix image. The print size we have chosen is a standard 300dpi 8"x12" format, which corresponds to about the physical size of an 8Mpix image printed at 100% magnification.
MyChart
- ScreenThis tab shows the measurement values and graph derived directly from a RAW image when displayed on a computer screen at 100% magnification (i.e., one image pixel corresponding to one screen pixel).
- PrintThis tab displays the print performance measurement values and graph derived from a RAW image after a normalization step that transforms all images, regardless of original resolution, to an 8Mpix image. The print size we have chosen is a standard 300dpi 8"x12" format, which corresponds to about the physical size of an 8Mpix image printed at 100% magnification.
MyChart
MyChart
MyChart
- CIE-D50This tab shows the measurement values and graphs performed under CIE-D50 illuminant. This illuminant corresponds to a theoretical light source matching daylight spectrum.
- CIE-AThis tab shows the measurement values and graphs performed under CIE-A illuminant. This illuminant corresponds to a theoretical light source matching a tungsten light bulb.
Color response
MyChartR
MyChartG
MyChartB
MyChartRS
| Sensitivity metamerism index ISO 17321 |
82 | |||
| White balance scales | R raw | 2.12 | ||
| G raw | 1 | |||
| B raw | 1.17 | |||
| R sRGB | G sRGB | B sRGB | ||
| Color matrix as defined in ISO standard 17321 | R raw | 1.82 | -0.66 | -0.15 |
| G raw | -0.14 | 1.34 | -0.2 | |
| B raw | 0.02 | -0.45 | 1.43 | |
| Sensitivity metamerism index ISO 17321 |
78 | |||
| White balance scales | R raw | 1.14 | ||
| G raw | 1 | |||
| B raw | 2.2 | |||
| R sRGB | G sRGB | B sRGB | ||
| Color matrix as defined in ISO standard 17321 | R raw | 1.82 | -0.66 | -0.16 |
| G raw | -0.18 | 1.36 | -0.18 | |
| B raw | 0.01 | -0.82 | 1.81 | |
- CIE-D50This tab shows the measurement values and graphs performed under CIE-D50 illuminant. This illuminant corresponds to a theoretical light source matching daylight spectrum.
- CIE-AThis tab shows the measurement values and graphs performed under CIE-A illuminant. This illuminant corresponds to a theoretical light source matching a tungsten light bulb.
Full Color Sensitivity: Noise covariance ellipses in CIE 1931 Lab color space
(ISO are manufacturer ISO)
