[filmscanners] Re: 3 year wait

["Arthur Entlich" <artistic-1@shaw.ca>]

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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