Re: Spectrometers for graphic arts and UV.
Re: Spectrometers for graphic arts and UV.
- Subject: Re: Spectrometers for graphic arts and UV.
- From: Claas Bickeböller via colorsync-users <email@hidden>
- Date: Thu, 12 Dec 2024 08:35:08 +0100
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Hi Peter,
ISO 3664:2009 requires a measurement range from 300nm to (AFAIR) 830nm.
This is way beyond the range needed for colour measurements.
As the instruments you are referring to are mainly used to measure
reflection values in the visible wavelength range (AKA colour) it would
add up a lot of overhead (= costs) to also comply to ISO 3664.
But our Konica Minolta FD-7 as well as our MYIRO-1 measure light
starting from 360nm.
As typical light sources used for colour appraisal in graphic arts do
not have significant energy below 360nm (neither fluorescent tubes nor
LED) this is perfectly sufficient to get a very good idea about the
quality of your viewing environment.
On top you can even use the measured light spectrum to calculate
profiles for exactly this condition (instead for theoretical D50).
In case you are interested in their other features feel free to contact
me off-list.
Best regards
Claas
Peter Miles via colorsync-users <mailto:email@hidden>
12. Dezember 2024 um 07:16
Hi List members.
I have been wondering why the spectrometers that we use in colour
management have not begun to include some UV measurement, given
ISO3664:2009 requires lighting with specified amounts of it. Or in the
case of the upcoming P3/P4 viewing condition, its absence.
I use ours (XRite) to measure CRI/TM-30 of room lighting, and to check
light modifiers used in our photo studio as they age, and that’s
great. But I can’t use it for to check if lighting is ISO 3664
compliant. And that seems strange, given these spectrometers target
market.
Would adding UV sensitivity make spectrometers too expensive for not
enough added value? Or are there other cans of other worms that make
it not practical?
I’m hoping those in the know could shed some light on this.
Thanks
Peter
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