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Measurable parameters
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MTF
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Lateral chromatic aberration
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distortion
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Color accuracy
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Tonal response
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White balance
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Noise
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Gamma
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Features
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Make full use of the chart card space and large amount of information. Compared with the actual utilization rate of the ISO12233 test card, the actual utilization rate is only 10%, which is greatly improved.
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More information to analyze signal processing, such as noise reduction, sharpening
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Fully automatic selection
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Avoiding the gradation overflow caused by high contrast, increasing the exposure latitude, the accuracy and repeatability are also higher
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Support multiple sizes and materials
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Material
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Matte: suitable for wide-angle lens testing, the maximum density is larger, and the details are more, but because of the surface reflection, it cannot be used for wide-angle lens testing
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Matte: It is recommended to test most lenses, the surface reflection is relatively uniform, the mirror reflection is very little, and its MTF extreme value is less than the matte MTF extreme value
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Transmissive
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Reflective
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Inkjet printing
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NO
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YES
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Silver salt photo paper
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NO
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YES
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Film material
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YES
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NO
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Chrome-plated glass material (highest precision required)
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YES
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NO
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Contrast
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-
4:1 and ISO12233:2014 standards meet
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2:1 and 10:1 can analyze nonlinear tone response
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Size
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Chart size
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5x9 (suitable for SLR cameras with an aspect ratio of 3:2 (DSLR format) and 16:9 HDTV format)
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5x7 (suitable for card cameras and mobile phones)
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Extra small
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8.5“×15”
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8.5“×10”
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Small
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14“×24”
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14“×20”
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medium
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24“×40”
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24“×34”
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Large
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44“×60”
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44“×60”
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Extra large
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44“×74”
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44“×64”
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Resolution
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The inkjet printed test card can reach 5cycle/mm of MTF50. Based on this, the small size of the test card will reduce the MTF value of the high-resolution camera system to the limit MTF value. The size of the card should be selected to meet the minimum focus distance of the camera. , The resolution is greater than the resolution of the sensor.
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Predistortion
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Level
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5x7
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5x9
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No distortion
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[0 0]
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[0 0]
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Distort
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[0.833 1.123]
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[0.833 1.375]
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Distort+
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[1.167 1.577]
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[1.167 1.982]
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Ultradistort
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[1.333 2.313]
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[1.333 2.958]
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We do not recommend using matte test cards in wide-angle lenses or pre-distortion cards.
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∷
