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NHK 11th level grayscale test card (γ=0.45)
Brand: DNP/Sine Image Size: 240 × 180mm Material: Uniform glass/HD photo paper Ratio: 4:3 Type: Reflective/transmissive optional
Product details
Introduction to NHK 11th Level Grayscale Test Card
The NHK 11th level grayscale test card (γ=0.45) mainly tests saturation, and grayscale represents the hierarchical levels of brightness from the darkest to the brightest. The more intermediate levels there are, the more delicate the visual effects can be presented.
NHK 11th level grayscale test card parameters
The NHK 11 segment grayscale test card (γ=0.45) is divided into transmissive and reflective test cards, and the transmittance and concentration of the two test cards are as follows:
transmission-type
| Order number |
1 (white) |
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | background |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Transmittance (%) | 74.1 | 61.7 | 50.1 | 40.7 | 31.6 | 23.4 | 16.6 | 12.0 | 7.6 | 4.5 | 2.0 | 22.4 |
| concentration | 0.13 | 0.21 | 0.30 | 0.39 | 0.50 | 0.63 | 0.78 | 0.92 | 1.12 | 1.35 | 1.70 | 0.65 |
reflection-type
| Order number |
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 |
| concentration | 0.08 | 0.15 | 0.24 | 0.34 | 0.43 | 0.56 | 0.71 | 0.87 | 1.08 | 1.32 | 1.70 | 0.74 |
NHK 11th level grayscale test card size
| Effective size | External dimensions | |
|---|---|---|
| transmission-type | 240×180 | 320×290 |
| reflection-type | 240×180 | 280×220 |
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