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iso12233 standard resolution test card

iso12233 standard resolution test card

Brand: Sine Image
Model: 0.5 times, 1 times, 2 times, 4 times, 8 times (can be customized)
Material: HD photo paper, imported film ratio: 4: 3/16: 9 optional types: reflective / transmissive can be customized
Free consultation: 400-666-2522
  • product description
  • Specifications
  • related software

ISO12233 resolution test card, ISO12233 resolution card (0.5x, 1x, 2x, 4x, 8x) 2000 lines

ISO12233 resolution card (0.5x, 1x, 2x, 4x, 8x), test lighting source, test software, providing a full range of one-stop professional services.

use

The resolution card (resolution card) is a standard sample, which can provide auxiliary testing such as vertical and horizontal resolution of actual shooting.

The resolution test uses the international standard ISO12233 resolution resolution card for testing, and adopts a unified shooting angle and shooting environment.

The resolution calculation uses HYRes software, which is divided into two parts: vertical resolution and horizontal resolution.

The evaluation of digital cameras is different from other products. Unlike notebooks, DIY, etc., there are a lot of software to test objective data, which can explain everything from the data. In addition to assessing the quality of digital cameras, in addition to having certain objective data, they also need to be evaluated in combination with actual use operations and shooting of proofs. Therefore, our evaluation is based on objective data and combined with the rational analysis of experienced evaluators, in order to obtain the most objective evaluation results.

The ISO12233 standard resolution test card complies with the 12233 standard "Photography-Electrophotographic Picture-Measurement Method". In this active area of 1 X size, the measurement of 20 cm height has only an error of about 0.1 mm. It has almost all the characteristics of a resolution card.


Common standard specifications

ISO12233 resolution test card

0,5X (10x17.8 cm), semimatt (normative contrast), image on photographic paper

0.5 times semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-50A

1X (20x35.6 cm), semimatt (normative contrast), image on photographic paper

1x semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-100A

2X (40x71.1 cm), semimatt (normative contrast), image on photographic paper

2x semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-200A

4X (80x142.2 cm), semimatt (normative contrast), image on photographic paper

4x semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-400A

8X (160x284.4 cm), semimatt (normative contrast), image on photographic paper

4x semi-dumb (standard contrast) HD photo paper

Terms and definitions

1. Resolution: In addition to sawtooth, it can distinguish the limit of fine patterns. It is represented by the number of bars per unit height of the screen.

2. Sawtooth: When the sampling frequency is less than twice the highest frequency of the image signal, noise with overlapping waves will be generated near the higher harmonics of the sampling frequency.

Shooting conditions

1. Illumination: The light source adopts "sunlight" (standard) or "tungsten filament lamp" according to ISO7589. Illuminate the chart sufficiently to ensure that the camera can output a signal. When lighting, make sure that the illumination difference between any part of the chart and the central area is within the range of + -10%. Be careful not to let the light from the illumination source directly enter the camera lens. Place objects with low emissivity around the chart to minimize the effects of reflected light.

2. Framing composition: When placing the graph, make it parallel to the focal plane of the camera, and make the horizontal thick frame parallel to the horizontal frame of the screen when viewed horizontally. According to the provisions of 12233, the effective height of the chart (the height inside the thick frame when looking at Figure 4.1 horizontally) just fills the frame when shooting. In fact, it is difficult to shoot completely in accordance with this requirement, so it can be shot slightly smaller. At this time, multiply by "the number of vertical pixels of the entire screen / the number of pixels per effective height of the graph in the screen" to specify.

3. Principle of camera condition setting: When measuring resolution according to this standard, the camera parameter principle actually adopts the factory setting. When measuring with a setting other than the factory setting, the setting used must be specified. If there are parameters that cannot be determined based on the settings at the factory, the manufacturer will measure the settings that are most likely to be used by the camera user, and indicate the information that can determine the settings.

4. There are no special settings for the exposure conditions.

5. Focus: No special setting

6. White balance: The white balance of the camera must be properly adjusted relative to the lighting source.

7. Zoom position: No special setting

Measurement conditions

1. Evaluation with printed images In order to minimize the dispersion of the evaluation, the following two points are used as the evaluation criteria.

a) The resolution is the spatial frequency at which the number of wedge lines of the visual resolution evaluation pattern changes (for example, from 5 to 4). The unit is expressed as the number of bars per height.

b) Be sure to track from the low frequency side when observing, and the printing frequency can be set to any value.

2. Evaluation with display image In order to minimize the dispersion of the evaluation, the following two points are used as the evaluation criteria.

a) The resolution is the spatial frequency at which the number of wedge lines of the visual resolution evaluation pattern changes (for example, from 5 to -4). The unit is expressed as the number of bars per height.

b) When observing, be sure to start tracking from the low frequency side. The magnification (zoom) magnification can be set to any value when observing on the display.

Resolution chart of different years

The MTF method can judge the resolution of cameras and lenses. Why should we develop different resolution testing methods? This question is very good. The MTF theory has been tried and tested, and it is correct! But the key lies in the sample layout! Because the MTF test chart composed of lines is essentially limited by the output device. When DSLR with up to 10 million pixels was introduced, such as: Nikon D2X or Canon EOS 1Ds MKII, its shooting resolution has exceeded traditional negatives. Performance (the traditional definition of the traditional 135mm film is about a thousand pixels). In other words, when the progress of the equipment began to exceed the limits of USAF1951 and ISO12233, the test no longer had a relative significance.

The new standard of SFR American measurement

The new term SFR! Spatial frequency response (SFR) is mainly used to measure the effect on a single image as the spatial frequency lines increase. In short, SFR is a simplified version of MFT. This is because measuring MFT requires obtaining expensive sine samples and converting a large amount of data. Therefore, PIMA developed this lower cost SFR as an alternative. Basically, SFR only needs a two-tone black-and-white oblique line (as shown in the left figure below) to convert a resolution evaluation chart approximately equal to the value of MFT.

Common standard specifications

ISO12233 resolution test card

0,5X (10x17.8 cm), semimatt (normative contrast), image on photographic paper

0.5 times semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-50A

1X (20x35.6 cm), semimatt (normative contrast), image on photographic paper

1x semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-100A

2X (40x71.1 cm), semimatt (normative contrast), image on photographic paper

2x semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-200A

4X (80x142.2 cm), semimatt (normative contrast), image on photographic paper

4x semi-dumb (standard contrast) HD photo paper

Product NO .: NQ-10-400A

8X (160x284.4 cm), semimatt (normative contrast), image on photographic paper

4x semi-dumb (standard contrast) HD photo paper

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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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