I recently did a one on one workshop with a delightful young man from
Switzerland. He doesn't have a densitometer or a scanner. He did have a spot
meter though and he asked if it could be used.
So as a test, we did the following.
I have one of those magnifying glass/ring light combinations that I use for
spotting prints. We postitioned the glass in a fixed position about 6 inches
above the surface of a table so we could move the tonal palette around
beneath it. We then used the spot meter to read the steps. The values were then
placed in a spreadsheet and inverted the converted to a % of the largest
fraction. This gave percentages of reflection density.
Later I compared the values to those from my densitometer and I'll be damned
if it wasn't the same curve....quite accurate considering the method! So try
it out if you have a spot meter.
Mark Nelson
Precision Digital Negatives
In a message dated 7/21/06 2:19:04 PM, guruguhan@hotmail.com writes:
> Hey Kyle,
>
> Thanks a lot, that's a lot of info. Regarding PDN, you say you don't have a
> densitometer, but I'm guessing you have a scanner then to calibrate. I have
> neither for the moment.
>
> I know that my negs will print differently on the different papers, when I
> say I don't know what I'm doing, I was exageratting a little. I would like
> to be more comfortable with using the brush, guessing exposure, adjusting
> exposure, et al before I start using more expensive paper. But I am looking
> forward to using the Platine. I still haven't found any COT320 in Toronto
> (though I haven't been looking lately).
>
> Thanks again
>
> Gu
>
Received on 07/21/06-06:43:43 PM Z
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