Alexey,
Sounds like a good idea but I'm not sure I understand what to look for in
those 3 printed images. Is the scanner capable of differentiating such
minute details, though I have an old but supposedly good scanner, an Epson
V700 I have no idea if it's capable of this level of accuracy. Let's say
it's not the case but maybe instead of singular level across the gradient I
should get from an 8 bit gradient as describe in your mail, say I get just a
few distinct levels across the gradient done at 16 bit should I consider
this result as a yes the printer does print at 16 bit and what about
dithered and not, what should I be looking for. Now suppose the scanner
can't make the difference between the 16 bit print and the dithered 8 bit
print.
I just hope my scanner is up for the job. Whatever happen I thanks you for
the suggestions.
Regards,
YG
-----Original Message-----
From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
On Behalf Of Alexey Gribunin
Sent: Friday, October 12, 2018 10:53 AM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Re: testing
Hello Yves!
Just one crazy idea - create 16 bit gradient (#1) let's say from RGB126
to RGB129.
Print it with 16 bit.
Then convert gradient to 8 bit WITH (#2) and WITHOUT (#3) dithering and
print both.
Then scan all three gradients in 16 bits scanner in one pass, increase
contrast and to see how it will look like.
Theoretical pictures of gradients you can obtain by increasing contrast
in Photoshop.
Best regards,
Alexey Gribunin.
On 12/10/2018 17:28, Yves Gauvreau wrote:
Anyone as an idea if it is possible to test, check or verify if a print
was done at a high bit depth of 16 bit per channel?
Thanks
YG
