I have been scanning some old phot's and saving them as Tiff's for
editing in Lightroom or Photolab. On loading them they are only in
8bit. I have tried to find a way of saving them in 16bit as there
is more information to edit with and have not found any thing. Is
there a way of saving in16bit
I have been scanning some old phot's and saving them as Tiff's for
editing in Lightroom or Photolab. On loading them they are only in
8bit. I have tried to find a way of saving them in 16bit as there is
more information to edit with and have not found any thing. Is there a
way of saving in16bit
I have been scanning some old phot's and saving them as Tiff's for
editing in Lightroom or Photolab. On loading them they are only in
8bit. I have tried to find a way of saving them in 16bit as there
is more information to edit with and have not found any thing. Is
there a way of saving in16bit
On 16 Jan 2022 as I do recall,
spanner wrote:
I have been scanning some old phot's and saving them as Tiff's forIf you're scanning them from DPlngScan, there should be an option
editing in Lightroom or Photolab. On loading them they are only in
8bit. I have tried to find a way of saving them in 16bit as there is
more information to edit with and have not found any thing. Is there a
way of saving in16bit
(probably depending on the Twain drivers for your scanner) to select the colour depth at that point: either black and white, 8bit, or in my case
24bpp (the drivers don't offer 16bit).
'Promoting' them to 16bit after they have been scanned won't create any
extra information as such.
--
Harriet Bazley == Loyaulte me lie ==
Nostalgia isn't what it used to be.
I have read Tiff are either 8bit or 16bit per channel with the
16bit having more data to play with.
In article <a5b596f4-cce2-4784...@googlegroups.com>,
spanner <phil...@eclipse.co.uk> wrote:
I have read Tiff are either 8bit or 16bit per channel with theThis wasn't clear from your first post. There is a big difference
16bit having more data to play with.
between an 8-bit image and an 8-bit per channel image. The latter is
what is generally referred to in RISC OS as a 24-bit image, i.e.
8-bits for each of the R,G, and B channels.
As far as I am aware, under RISC OS, (a) there is no way of getting a
scan using DPScan of more than 24-bit (8-bit per channel) and (b)
assuming you managed to obtain such an image of 48-bits (16-bit per
channel) there is no app available that could deal with such an image.
On other OSs images of more than 8-bits per channel can be handled.
--
Chris Johnson
On Sunday, January 16, 2022 at 10:17:19 PM UTC, News wrote:
In article <a5b596f4-cce2-4784...@googlegroups.com>, spanner <phil...@eclipse.co.uk> wrote:
I have read Tiff are either 8bit or 16bit per channel with the 16bit having more data to play with.This wasn't clear from your first post. There is a big difference
between an 8-bit image and an 8-bit per channel image. The latter is
what is generally referred to in RISC OS as a 24-bit image, i.e. 8-bits for each of the R,G, and B channels.
As far as I am aware, under RISC OS, (a) there is no way of getting a
scan using DPScan of more than 24-bit (8-bit per channel) and (b)
assuming you managed to obtain such an image of 48-bits (16-bit per channel) there is no app available that could deal with such an image.
On other OSs images of more than 8-bits per channel can be handled.
-- Chris Johnson
Thank you for clearing up that. Thinking 8bit 16bit 24bit was the same was overall. For 16bit I will need 48bit (16bit per channel). I will have to
go to the windows side and use something like Vuescan. One less reason to
use RiscOs.
In article <a5b596f4-cce2-4784...@googlegroups.com>,
spanner <phil...@eclipse.co.uk> wrote:
I have read Tiff are either 8bit or 16bit per channel with theThis wasn't clear from your first post [...]
16bit having more data to play with.
As far as I am aware, under RISC OS, [...] there is no app available that could deal with such an image.
In message <72959edc-d7be-410f-bc1b-10c3ae11b217n@googlegroups.com>
spanner <philipmay@eclipse.co.uk> wrote:
Thank you for clearing up that. Thinking 8bit 16bit 24bit was the same was >> overall. For 16bit I will need 48bit (16bit per channel). I will have to
go to the windows side and use something like Vuescan. One less reason to
use RiscOs.
Good luck trying to tell the difference between 8 bits per colour and
any higher number.
On 17/01/2022 22:55, David Higton wrote:
In message <72959edc-d7be-410f-bc1b-10c3ae11b217n@googlegroups.com>
spanner <philipmay@eclipse.co.uk> wrote:
Thank you for clearing up that. Thinking 8bit 16bit 24bit was the
same was overall. For 16bit I will need 48bit (16bit per channel). I
will have to go to the windows side and use something like Vuescan.
One less reason to use RiscOs.
Good luck trying to tell the difference between 8 bits per colour and
any higher number.
There is a very noticeable difference between 8 and 10 or 12 bits per component, you can see it in grey scales and some parts of the colour
space are far less banded - BUT you not only have to have an image with
the additional information, but your graphics application, OS, graphics
card and monitor all have to handle greater than 8 bits per component,
and that tends to only be on a pro or semi-pro setup.
Good luck trying to tell the difference between 8 bits per colour and
any higher number.
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