Mmmmm, just done it again from scratch.
The slide is quite dark at the bottom, so I had pulled up the Luminosity
curve in NikonScan 402.
That was main reason.
Another has to do with curves: in the scanner sftwr I move each curve /
level channel separately 'till it looks almost right. Then I make a very
little adjustment using the RGB curve, If I'm not very careful contrast
increases very quickly, leading to an increase in lightness.
Ok, this does not increase diffraction but a larger image of the moon,
with its borders lacking sharpness.
Halation, perhaps - don't exactly remember what Ken said. But proper
diffraction is more noticeable in the film than in the scan.
Thanks, Chuck and Moose - I'd never had noticed by myself.
Fernando.
Moose wrote:
> Fernando Gonzalez Gentile wrote:
>
>>> Chuck Norcutt wrote:
>>>
>>>
>>>
>>>> Very nice and also very interesting. I'm wondering why the moon is
>>>> rendered with 6 diffraction spikes. It look more like it was taken with
>>>> an Newtonian telescope with a 3 arm spider than the 21/3.5.
>>>>
>
> Fernando Gonzalez Gentile wrote:
>
>> I felt frightened when read what you wrote on diffraction - though I had
>> made an error during the scanning.
>> Fact is that the amount of diffraction you're seeing is a little less than
>> in the Provia.
>>
>>
>
> Could this be an example of the halation, or whatever it is that Ken
> natters on about, in some Fuji films, spreading out the intense brightness?
>
> A. Digital and Koduck Moose
>
--
Dr. Fernando González Gentile M.D.
Av.L.P.Ponce 1526B - 11600 Montevideo, Uruguay.
Phone: +598 2 7084858
Fax: +598 2 7087396
<fgnzalez@xxxxxxxxxxxxx>
--
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