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9-level grayscale card
Brand: Sine Image/ESSER Elsa Model: YE0108/TE108 Size: Customizable Material: Film/HD Photo Paper Ratio: 4:3 Type: Reflective/Translucent Optional
Product details
Introduction to 9-level grayscale card
The 9-level grayscale card YE0108 is used for evaluating the color tone reproducibility of electronic cameras. Two 9-order grayscale blocks are arranged in reverse on a gray background (D ≈ 0.75), with a logarithmic scale of grayscale (gamma=0.45). Generate the optimal camera gamma correction value using two opposite 9th order linear stepping signals. The contrast range of this grayscale test card is 50:1.
9-level grayscale card grayscale value
| Level Step |
Density Density |
Reflectivity% Reflectance in % |
Output voltage% Output voltage in % |
| 1 | 0.15 | 71 | 100 |
| 2 | 0.26 | 55 | 88.75 |
| 3 | 0.37 | 42 | 77.5 |
| 4 | 0.51 | 31 | 66.25 |
| 5 | 0.67 | 22 | 55 |
| 6 | 0.85 | 14 | 43.75 |
| 7 | 1.09 | 8 | 32.5 |
| 8 | 1.40 | 4 | 21.25 |
| 9 | 1.85 | 1 | 10 |
This density value is based on the density of BaSO4=0. The pure black and pure white areas are between gray levels. The density of black blocks is D>2.4 (reflectivity>0.5%), and the density of white blocks is 0.09 (reflectivity=79%).
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