Re: i1Pro and monitors
Re: i1Pro and monitors
- Subject: Re: i1Pro and monitors
- From: Wire ~ via colorsync-users <email@hidden>
- Date: Mon, 9 Dec 2019 15:33:40 -0800
Attempt to sort out the lingo:
1) Radiometer is a sort of light meter for some assumed spectrum;could be
any EMR. If it is used for photography it's literally called a lightmeter.
2) Spectrometer, a radiometer that can report spectral power distributions,
e.g., the EMR contour of a spectra. This is classically about a prism,hot
objects and the visible signatures of their elemental constituents. But
also could be about any range of EMR
3) Spectroradiometer, measurement of precise energy distributions across a
spectra. This is about knowing not only the spectral distribution, but
exactly how much power is being conveyed.
4) Spectrophotometer, is an application of a spectrometer for evaluating
SPDs in range of visual sensation. In domain of Colorsync Users, this tends
to be optimized for reflective media, but such a distinction is application
dependent.
5) Colorimeter, a device that reports tri-stimulus colorimetric (e.g, CIE
XYZ) coordinates of spectra; optimized under an assumption of RGB emissive
media, e.g., display techbology
These last two are applications to colorimetry, whereas the former three
apply to many other EMR domains. So if your a physicist or chemist or radio
engineer, etc. you are thinking in terms of first 3, and if you are a color
engineer you are thinking in terms of the last two.
As to the sensitivities, this is a highly application-specific aspect of a
particular device. According to the writeups I found, there's no inherent
property of a colorimeter vs spectrophotometer sensitivity advantage. In
context of TFTCentral they are talking about specific XRite instruments
which may well have the claimed distinction.
So to me it seems there's no contradiction of the TFTCentral observation.
/wire
On Mon, Dec 9, 2019 at 4:34 AM Roger Breton via colorsync-users <
email@hidden> wrote:
> I was up on some popular UK web site dealing with monitors galore
> (tftcentral) and I stumbled on this comment, which made me pause : "An
> X-rite i1 Display Pro colorimeter was also used to verify the black point
> and contrast ratio since the i1 Pro 2 spectrophotometer is less reliable at
> the darker end.". Does this make any sense to anyone, here?
>
>
>
> I'm into metrology over my ears, these days. So I'm especially sensitive to
> comments like that.
>
>
>
> / Roger
>
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