Cor Breukel (cor@ruly46.medfac.leidenuniv.nl)
Thu, 21 Jan 1999 11:45:24 +0100 (MET)
On Thu, 21 Jan 1999, Cor Breukel wrote:
Oh I forgot to add that without the negative the maschine read a density
of 0.15; so you should substracr 0.15 from all readings (fits nicely with
the 0.04 given by Kodak for step 1...)
I suppose that density of 0.75 should give you the middle grey of 18%..
so around step 6..
>
> Densities T14 (mine obviously..:-)..), read on a LKB laser densitometer
> (anyone around with a manual of this maschine?.., I only know the basics,
> and its readings more or less fit with the expected ones on a Stouffer
> stepwedge..)
>
> 1 0.20
> 2 0.33
> 3 0.49
> 4 0.65
> 5 0.80
> 6 0.95
> 7 1.11
> 8 1.26
> 9 1.41
> 10 1.57
> 11 1.70
> 12 1.86
>
> So you see a more or less exact increase of half a stop (0.15)
>
> Hope this helps
>
>
>
> Cor Breukel
>
> http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
> "The Infrared Gallery"
> http://ruly70.medfac.leidenuniv.nl/~cor/ir-gallery.html
>
>
>
Cor Breukel
http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
"The Infrared Gallery"
http://ruly70.medfac.leidenuniv.nl/~cor/ir-gallery.html
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