Re: Spectros better than colorimeters for monitor profiling? [was: X-Rite colormunki]
Re: Spectros better than colorimeters for monitor profiling? [was: X-Rite colormunki]
- Subject: Re: Spectros better than colorimeters for monitor profiling? [was: X-Rite colormunki]
- From: "edmund ronald" <email@hidden>
- Date: Sat, 25 Oct 2008 23:53:18 +0200
ROTFL :)
LEDs are quantum devices. The simples ones just emit one single
spectral ray. That's why we even have LED lasers.
It's harder to be spikier than that.
Some LEDs have a fluorescent shell encapsulating the actual diode, I
think this can turn them into white light LEDs, but the light here is
re-emitted.
On Sat, Oct 25, 2008 at 11:47 PM, Roger Breton <email@hidden> wrote:
> Edmund (and Marco),
>
> The day LEDs rule the world -- that day is not too far into the future --
> we'll be freed from spikes alltogether as LEDs have smooth, wideband-type
> spectra, and it won't matter that they are measured with a 10nm or 3.3nm
> spectral resolution device like the EyeOnePro anymore. That's my take.
>
> The business of noise in the low light measurements, with regards to the
> EyeOnePro again, can be minimized by leaving the instrument warm-up to the
> monitor temperature *prior* to taking measurements. I think it is the dark
> current calibration or zero offset in the EyeOnePro that becomes unstable
> with warm-up in the CCD array.
>
> Roger
>
>>
>> - Apart from shadow noise rejection issues, there maybe some
>> real-world issues when the backlight is very spiky. Apparently having
>> the backlight read offset into the wrong 10nm bucket mayhave some
>> real world impact on calibration. I don't know whether the i1Pro
>> really suffers from this or not, when I get my hands on a research
>> grade instrument I plan to run some tests.
>>
>> Edmund
>
>
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