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SineImage Grayscale Test Card
Brand: Sine Image Model: YE083 Size: 280 x 210mm Customizable Type: Reflective/transmissive optional
Product details
Introduction to SineImage Grayscale Test Card
The grayscale test card can test parameters such as noise, dynamic range, contrast, exposure accuracy, lens glare, etc. This grayscale test card is used in conjunction with desktop lightboxes (please refer to the camera testing standard light source box) or wall mounted for testing various cameras, cameras, etc.
Grayscale parameter table
| Grayscale level | Density | Reflectivity% |
| 1 | 0.05 | 89 |
| 2 | 0.13 | 74 |
| 3 | 0.22 | 60 |
| 4 | 0.32 | 48 |
| 5 | 0.43 | 37 |
| 6 | 0.55 | 28 |
| 7 | 0.69 | 20 |
| 8 | 0.86 | 14 |
| 9 | 1.06 | 9 |
| 10 | 1.31 | 5 |
| 11 | 1.65 | 2 |
The density of the white area between the two grayscale bars is D=0.05 (reflectivity=89%).
There are types of 11th order reflective grayscale test cards, (γ=1.0) or (γ=0.45)
The following (γ=1.0) are the reflectance and grayscale density values:
| Grayscale level |
1 (White) |
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Background |
| Reflectance (%) | 83.0 | 74.9 | 66.8 | 58.7 | 50.6 | 42.5 | 34.4 | 26.3 | 18.2 | 10.1 | 2.0 | 18.0 |
| density | 0.08 | 0.13 | 0.18 | 0.23 | 0.30 | 0.37 | 0.46 | 0.58 | 0.74 | 1.00 | 1.70 | 0.74 |
The following (γ=0.45) are the reflectance and grayscale density values:
| Grayscale level |
1 (White) |
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Background |
| Reflectance (%) | 83.0 | 71.0 | 57.0 | 46.0 | 37.0 | 27.4 | 19.5 | 13.4 | 8.3 | 4.75 | 2.0 | 18.0 |
| density | 0.08 | 0.15 | 0.24 | 0.34 | 0.43 | 0.56 | 0.71 | 0.87 | 1.08 | 1.32 | 1.70 | 0.74 |
Recommended usage:
Adjust the aperture until the brightest block reaches 100% video signal on the waveform monitor. Using a camera with the best calibration according to ITU BT.709 standard, the blackest block will reach a signal level of 10%.
The maximum printing density allowed by the production process of reflective test cards is 1.64. The target value for the darkest grayscale is 1.70. Therefore, the distance of the final grayscale will be slightly different.
SineImage grayscale test card has transmission and reflection options, with effective image sizes of 240 * 180mm, 240 * 135mm, 280 * 210mm, 280 * 157.5mm, etc., and can also be customized in size.
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