on 2005/02/01 1:52 AM, Moose at olymoose@xxxxxxxxxxxxxxx wrote:
> They specifically mention color negative film with resolution of 2,400
> "lines". I believe this is using the new spec of LPH, Lines per Picture
> Height, used in comparing sensors of different sizes. Since both film
> and this sensor are the same size, numbers are even more directly
> comparable and can be converted to lpmm (I assume they mean line
> pairs?). The 1Ds MII measured at 2760Vx2810Hx2200D
>
> 2400/ 24 = 100 film
>
> 2760/ 24 = 115 Vertical
> 2810/ 24 = 117 Horizontal
> 2200/ 24 = 92 Diagonal
Are there two of these Lines per conventional film line pair? Otherwise of
course they don't compare with pixels.
That implies the film is only 50 lp/mm - mid-low grade for color films on
low-contrast targets, very low grade for high-contrast. As discussed earlier
here, see
http://www.creekin.net/films.htm
Andrew
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