From: JUAN MIGUEL JUSDADO (jusdado@teleline.es)
Date: 08/05/03-03:49:42 PM Z
Thank you to answer to my question. Niger Miller, one is not able to copy
and to hit the image of 8-bits on that of 16-bits, although like I said,
they Dan Burkholder, he/she makes something like that as:
in the image of 8-bits to select all, now with a tool (not of selection),
does it drag that image from 8-bits to that of 16-bits., but as he/she made
it?, don't I remember.
In all ways, I am not speaking of using the mixer of channels directly to
work in scale of gray. I prefer to work with the image in RGB and finally,
to transform into scale of gray, but always at the end of the process.
Pardon for my English. - Text translated by computer.
-----Mensaje original-----
De: Nigel Miller [mailto:nm1@bolton.ac.uk]
Enviado el: martes, 05 de agosto de 2003 14:01
Para: alt-photo-process-l@sask.usask.ca
Asunto: Re: modification of 16-bits.
Hi Juan
I suspect that the 'trick' is something like this:
1. change a copy of your original 16 bit image to 8 bit
2. Modify this image, curves contrast etc
3. Convert this copy back to 16 bit (although it will only have 8 bit data)
4. Open the original un modified 16 bit file and the modified file together
in photoshop
5. 'Select All' on the modified image file, copy and paste on to the
original image.
6. Now you will have an image of two layers. By altering the opacity of the
top layer (modified image) you can allow more or less of the original image
to show through (or merge) with the modified image resulting in a combined,
truly 16 bit, image.
I tend to slightly 'over do' the modification on the 8 bit image so that
when the images are combined the opacity may have to be dropped to 50% or
less to give the most pleasing final image.
I hope that this helps.
Nigel Miller
On 3/8/03 9:59 pm, "JUAN MIGUEL JUSDADO" <jusdado@teleline.es> wrote:
> My camera Nikon 5700 use a format of 16-bits. With Photoshop an image in
> 16-bits it can hardly modify with curved, selections, etc. Dan Burkholder
in
> Madrid (Spain) I teach a trick that I have forgotten.
> The trick was to convert the image at 8-bits, to modify it and later to
> place it on the image of 16-bits., but I don't remember like it was made.
> Can somebody tell me like that trick is made?.
>
> Pardon for my English. - Text translated by computer
>
>
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