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SFRplus test card contrast 4: 1

SFRplus test card contrast 4: 1

Brand: Sine Image
Model: SFRplus
Size: Large, medium and small size Optional materials: HD photo paper Type: Reflective
Free consultation: 400-666-2522
  • product description
  • Specifications
  • related software

Can be used for fully automatic analysis of image quality parameters

SFRplus test card features

• Allowance uses all the space on the graphics card and has a large amount of information. In contrast, the actual usage rate of the old ISO resolution test cards is only 10%, and 10% of the content can be used for data analysis.

• Avoiding image tone overflow caused by high-contrast images, making exposure more tolerant, and accuracy and repeatability higher.

• More information to help analyze signal processing, such as sharpening, noise reduction, etc.

• Fully automatic image recognition and positioning: It is not necessary to manually select the analysis area, and the test area can be located fully automatically.

• Support a variety of sizes and materials: from 5X5cm to 110X187cm, the material can be matte, semi-gloss or backlight, glass chrome-plated material (for high-precision analysis of small format)

The SFRplus test card can be used with the SFRplus module in the software Imatest, which can analyze the following parameters

• MTF clarity / resolution

• Distortion and field of view

• Noise

• ISO sensitivity

• Color accuracy

• Lateral chromatic aberration

• Gmma and tone response.

SFRplus test card optional items

Contrast selection

• 10: 1 and 2: 1 contrast can be used to analyze non-linear signal response

• 10: 1 only one contrast helps analyze 3D charts across the entire framing range

• 4: 1 contrast is in line with the ISO-12233 standard of the 2014 edition

Media Type-Semi-Gloss or Matte Material

• Matte paper has the advantage of helping to reduce the reflection, and the reflection is more uniform. Compared with the test chart of matte photo paper, the specular reflection is very little. The extreme value of the test card MTF of matte paper is smaller than the limit value of matte photo paper.

• Matte photo paper, matte photo paper will have more details and higher maximum density than matte paper. But because of its strong specular reflection, it is usually not suitable for testing of wide-angle lenses.

Selection of aspect ratio

• 5x9 block test chart, for a typical 3: 2 SLR camera and a typical 16: 9 HDTV format.

• 5x7 square test chart, suitable for typical card cameras and mobile phones, the ratio is 4: 3.

Inkjet test card resolution

The resolution of all the inkjet printed test cards we provide is usually close to the MTF50 value of 5 cycles / mm, so when choosing the size of the test chart, you need to consider this. It is not appropriate to use a too small test card to test a high-resolution camera, which will reduce the resolution of the imaging system to the limit resolution of the test card. Therefore, the size of the test card must be considered to meet the minimum focusing distance, and the resolution must be greater than the resolution of the sensor.

Selectable size and effective analysis area

For cameras up to 12 million pixels, a medium-sized test card can be used. Large-sized test cards can test cameras from 12 megapixels to 24 megapixels. Cameras larger than 24 megapixels require super-sized test cards.

SFRplus test card size


Square Dimensions
5x9 5x7
X-Small (super small) 8.5 "x 15" 8.5 x 10 "
Small 14 "x 24" 14 "x 20"
Medium 24 "x 40" 24 "x 34"
Large 44 "x 60" 44 "x 60"
X-Large (oversized) 44 "x 74" 44 "x 64"

SFRplus test card effective shooting area

The effective shooting area of the graphics card includes a part of the blank area except the upper and lower black edges. Because the SFRplus test module automatically analyzes and locates the test area, it needs to include a part of the blank.

Square Dimensions
5x9 5x7
X-Small (Super Small) 7.85 "x 15" 6.75 "x 10"
Small 12.5 "x 24" 13.5 "x 20"
Medium 22 "x 39.22" 22 "x 33"
Large 33 "x 59" 40 "x 59"
X-Large (oversized) 42 "x 72" 42 "x 59"

Color block element

The color block element includes 20 color blocks, which can be used to analyze the color reproduction, but its measurement data needs to be selected as reference data.

Predistortion selection

The test chart with predistortion can be used to analyze wide-angle and fisheye lenses, and can adjust different distortion levels.

Level Matrix (5x7) Matrix (5x9)
No distortion [0 0] [0 0]
Distort (small distortion) [0.833 1.123] [0.833 1.375]
Distort + (large distortion) [1.167 1.577] [1.167 1.982]
Ultradistort [1.333 2.313] [1.333 2.958]

We do not recommend using glossy media for testing wide-angle lenses or predistortion test cards, as they are prone to reflections.

SFRplus test card size


Square Dimensions
5x9 5x7
X-Small (super small) 8.5 "x 15" 8.5 x 10 "
Small 14 "x 24" 14 "x 20"
Medium 24 "x 40" 24 "x 34"
Large 44 "x 60" 44 "x 60"
X-Large (oversized) 44 "x 74" 44 "x 64"

SFRplus test card effective shooting area

The effective shooting area of the graphics card includes a part of the blank area except the upper and lower black edges. Because the SFRplus test module automatically analyzes and locates the test area, it needs to include a part of the blank.

Square Dimensions
5x9 5x7
X-Small (Super Small) 7.85 "x 15" 6.75 "x 10"
Small 12.5 "x 24" 13.5 "x 20"
Medium 22 "x 39.22" 22 "x 33"
Large 33 "x 59" 40 "x 59"
X-Large (oversized) 42 "x 72" 42 "x 59"

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Part 2: Download the full range of color card electronic versions

Part III: Download of 3nh instrument instruction manual

Part 1: 3NH official download

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Part 2: Download the full range of color card electronic versions

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