Re: Darkloading

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On 13 Aug 96 at 4:35, George L Smyth wrote:

> Willem-Jan Markerink wrote:
> > 
> > Ooops!
> > My only reference for this is an article in FotoMagazin (8/95), and
> > it definately shows a log chart. It reads "Log sensitivity in
> > ergs/cm^2" on the Y-axis. The blue area of Konica peaks at 1.25
> > ergs/cm^2, the red area at a little more. The blue peak of Konica is
> > almost equal to that of the Ilford FP4 plus; and the red peak of the
> > Konica is almost equal to the sensitivity of the Kodak HIE in that
> > area (HIE only climbs another 0.25 ergs/cm^2 towards IR).
> > 
> 
> Okay, then we have different charts.  The one Konica gives out is rather
> incomplete - I wish I had your chart. <g>

Will make a copy of it, along with those Schott charts and data 
tables.
BTW, it just occurred to me that the surface below those plots is 
directly related to the overall sensitivity in ASA....wonder whether 
one can calculate the ASA from these ergs/cm^2 x nm for different 
filters with different cut off values....mmm....


--
Bye,

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The difference 
between men and boys
is the price of their toys

<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]

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End of INFRARED-PHOTOGRAPHY Digest 30
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