[pure-silver] Re: Under exposed frame
- From: Tim Eitniear <timeitniear@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Mon, 03 Jan 2005 10:00:56 -0600
Richard,
Reading your post about improving the negative in PS reminded me of Dan
Burkholder¹s book ³Making Digital Negatives for Contact Printing² Depending
on the negative size and the desired print size, a corrected negative could
be made.
Tim
On 1/2/05 5:13 PM, "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> wrote:
>
> ----- 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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