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[filmscanners] Re: 3 year wait



Austin is correct, from the research I've done here.  There use of the
word "lines" in there resolution description probably originally came
from "raster lines" since many film recorders used a high res monochrome
CRT screen (through colored filters) to create the image.  The raster
lines usually go from top to bottom, but I think it just became a
standard word usage with film recorders.

Art

Laurie Solomon wrote:

> Austin,
>
> I am not familiar with the internal workings of film recorders to claim
> knowledge; but I have discovered that different 4K film recorders can have
> different size lights which effect the brightness and the amount of detail
> that the film recorder sensors can pick up - thus the actual effective
> resolution the recorder has.  I believe that the 4K figure is in LPI or line
> pairs not ppi; and it reflects the traditional printers measures for
> halftone screens which are from 1.5 to 2.0 times the number of raw
> undithered non-halftoned pixels per inch, dots per inch, or samples per inch
> as measured along the long side of the film..
>


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