How to read resolution from ISO12233 chart
The numbers refer to the number of lines x 100 for the whole vertical.
If the number 10 is the shartest lines that we can distinguish, it means that the number of vertical lines for the chart is 10 x 1000 which is 1000.
Please note for a full hd TV, the number of vertical lines is 1080, which is why FHD is also referred to as 1080p, p represents full lines instead of interlaced lines, labelled is 1080i.
The usual camera sensor has an aspect ration of 3:2, i.e. 3 times for horizontal, 2 times for vertical.
So if the vertical is 1,000, then the horizontal should be 1000 / 2 X 3, which is 1,500.
This is equivalent to a picture of 1500 x 1000 pixels, or 1.5 Mpixel.
Modern cameras can show much higher resolution than just 1.5Mpixel. For the ISO12233 chart, the higherst number of lines is only 20 x 100 which is 2000 equivalent to a FHD picture. To be more realistic, 3000 x 2000 pixels which is just 6 Mpixel.
To increase the resolution handling of the ISO12233 chart, I stack 3 of them in one picture, so the number of lines will be 3 times of what is shown. Howerver since my chart is actually only an A4 size, it can handle ony 4 Megapixel, so the largest resolution is not 2000 lines but only 1400 lines.
If the number 10 is the shartest lines that we can distinguish, it means that the number of vertical lines for the chart is 10 x 1000 which is 1000.
Please note for a full hd TV, the number of vertical lines is 1080, which is why FHD is also referred to as 1080p, p represents full lines instead of interlaced lines, labelled is 1080i.
The usual camera sensor has an aspect ration of 3:2, i.e. 3 times for horizontal, 2 times for vertical.
So if the vertical is 1,000, then the horizontal should be 1000 / 2 X 3, which is 1,500.
This is equivalent to a picture of 1500 x 1000 pixels, or 1.5 Mpixel.
Modern cameras can show much higher resolution than just 1.5Mpixel. For the ISO12233 chart, the higherst number of lines is only 20 x 100 which is 2000 equivalent to a FHD picture. To be more realistic, 3000 x 2000 pixels which is just 6 Mpixel.
To increase the resolution handling of the ISO12233 chart, I stack 3 of them in one picture, so the number of lines will be 3 times of what is shown. Howerver since my chart is actually only an A4 size, it can handle ony 4 Megapixel, so the largest resolution is not 2000 lines but only 1400 lines.
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