Response to A Super film from Germany Gibabit film

Peter, your method of "measuring : the thickness of one line and from which conclude that the image has 3000 lpmm resolution is dubious at best. The definition of "resolution" involves two points or line, (Raleigh criteria ), ie whether this two points or lines can be viewed as two separate lines and not merged into on. If ther is one line, there is nothing to resolve.

Further, if you get only the image of a line, and you want to judge the MTF , the criteria is the energy distribution inside the Airy disk, not the diameter of the disk itself. A thin line may indicate, contrary to what you 'calculated" a rather low resolution, because it has low energy concetnration. A good example is you cannot see small stars in night sky, the energy distribution of their image is so low, it is no visible-- the diameter =0, which does not means the resolution is 1/0=infinity. In many 35mm camera pictures, power lines could becomes so thin and nearly disappear, it indicate low resolution , not high. In conclusion, your '300 lpmm" conclusion was incorrect, based on your faulty method

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