I tried to calibrate the TV to some extend (and I still use it this
way). In a nut shell - I turned of all improvements that the TV offers
like eye care or dynamic contrast (whatever I was able to find out) -
these can be turned back on after the calibration if you wish. I used
chromecast and with it - spyder 5 and displaycal. With this - in expert
mode of the TV - I was able to tweak brightness and adjust it as per
what spyder 5 was detecting. Then I was able to adjust the RGB values
independently and again - spyder 5 would detect it.
But this is where all ended. Displaycal would show patches on the screen
and spyder 5 would measure them but there is no known to me way to load
the generated profile on the TV.
If you use the computer to calibrate it - over hdmi cable - it would be
only valid while the computer is plugged in.
Professional services charge quite a bit but my understanding is that it
still boils down to measuring on the screen and adjusting manually the
controls.
Regards,
B
On 2017-06-23 09:21 AM, Guillermo Rozas wrote:
One point I forgot to make: this is from the point of view of someone
using the TV as a PC monitor. The calibration is only valid when the
TV is connected to the PC, because all the profiles are applied on the
graphic card and the operating system. If one needs to calibrate the
TV for independent use, then it is a completely different problem
(that probably requieres different software more than a different
probe).
Regards,
Guillermo
On Fri, Jun 23, 2017 at 9:14 AM, Guillermo Rozas <[email protected]> wrote:
I did it with the same probe (Spyder 5) that I used to calibrate my PC
monitors, connecting the TV as an external monitor via HDMI and
following the same procedure I followed for the monitors (using
DisplayCal). One caveat: the TV I calibrated had very bad behavior at
low light levels, so even if in general the color and contrast
improved a lot, it resulted in very strong banding for darker areas.
Nothing one can do about that other than buying a better TV.
There shouldn't be a difference between an external HDMI monitor and a
TV from the point of view of the calibration, as they are
indistinguishable for the PC. There may be differences on hardware for
different models (illumination source, pixel technology), but nothing
that you cannot find in certain models of PC monitors anyways. In the
end a TV is just a monitor with a tuner...
It is also true that across generations DataColor claims it has been
improving the detector, so maybe for the typical monitor and typical
TV around the Spyder 2 release date the typical technologies were so
different that a sensor tuned for monitors worked very badly for TVs.
It could also be that DataColor just wanted to get more money just for
a software upgrade (which is the situation now between most of their
probes, easily overcomed by using DisplayCal) ;)
Best regards,
Guillermo
On Fri, Jun 23, 2017 at 8:18 AM, Jean-Luc CECCOLI
<[email protected]> wrote:
Message du 23/06/17 14:36
De : "Guillermo Rozas" <[email protected]>
A : "darktable forum" <[email protected]>
Copie à :
Objet : Re: [darktable-user] Which config for Darktable
Hi,
On Thu, Jun 22, 2017 at 5:10 PM, GDoirat - GMail
<[email protected]> wrote:
I use darktable for long time and i want to put my pictures on a NAS to
have more security.
[.../...]
Hello,
If I get your proposed configuration right, this might mean installing a
4GB gaming graphics card on a headless system -- I think it is worth it. But
I wonder if it is possible to get the colors right on a TV, is calibration
possible for a TV backend?
Calibration is possible using the same systems one uses for a normal
monitor (I calibrated one using a Spyder 5). The posible drawback I
see is that the (color) quality standard for TVs seems to be lower
than por PC monitors at the same price point, at least in my very
small sample of 2 of each one.
I once tried to calibrate (characterize ?) the TV I use as a monitor with my
spyder 2 and couldn't get it work.
I then read a thread pretending that the only way for this was to use a
specially made probe, the spyder4TV HD.
You mean it can be done with a "normal" calibrating probe ? Or does one need
a particuliar model ?
Rgrds,
J.-Luc
____________________________________________________________________________
darktable user mailing list to unsubscribe send a mail to
[email protected]
____________________________________________________________________________
darktable user mailing list
to unsubscribe send a mail to [email protected]
____________________________________________________________________________
darktable user mailing list
to unsubscribe send a mail to [email protected]
