[pure-silver] Re: Under exposed frame
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sun, 2 Jan 2005 15:13:09 -0800
----- Original Message -----
From: "Justin F. Knotzke" <jknotzke@xxxxxxxxxx>
To: "PureSilver Mailing List" <pure-silver@xxxxxxxxxxxxx>
Sent: Sunday, January 02, 2005 7:11 AM
Subject: [pure-silver] Under exposed frame
>
> I have the following frame which I would like to print
> but can't:
>
> http://www.shampoo.ca/pics/xmas-day-2004.jpg
>
> I can scan it and with some tuning in photoshop can
> get what you
> see above. But attempting to wet print it is nearly
> impossible. It's
> simply too dark. I didn't have enough light and I didn't
> want to use a
> flash so I underexposed and hoped for the best..
>
> Can someone send me some tips on how I can coax this
> image out onto
> paper? Every attempt I have made so far yields either too
> dark an image
> or a greyish image with no real blacks.
>
> How should I go about trying to print this ?
>
> Thanks
>
> J
>
>
> --
> Justin F. Knotzke
> jknotzke@xxxxxxxxxx
> http://www.shampoo.ca
I was able to considerably improve the JPG you sent in
Photoshop by manually adjusting the "levels". One can tailor
the curve shape at will to compensate for the excessive
highlight contrast. I think this is the easiest way to
approach this. You could try a contrast mask on the negative
but that will require some experimentation. The problem with
conventional printing is that correcting this sort of image
requires being able to change the shape of the print curve
to compensate the variation in contrast with density of the
negative. The shadows will have very low contrast because
they are exposed on the toe of the film curve while the
highlights have much higher contrast because they are will
up on the straight line part of the curve. As a result if
you choose the paper contrast so that the mid grays appear
correct the shadows will have low density. If you print for
normally deep shadows the mid grays will be compressed and
the highlights blown out. I don't think any combination of
printing on variable contrast paper will fix this. VC paper
has variable overall contast but no way to change the
relative contrast of different parts of the gray scale. A
contast filter can improve this but its easier, and I think
the results will be better, if its done in an image editor
like Photoshop.
Again, I could improve the jpg you have posted almost
instantly so I think the possibilities for improvement of
the original scan must be even greater.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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